# a. Write an equation compared to the equation of the standard parabola that satisfies the description of each parabola. 1. A parabola whose vertex is (0, -3) 2. A parabola whose vertex is (5, 1) 3. A parabola that opens

65,883 questions
1. ## MATH

a. Write an equation compared to the equation of the standard parabola that satisfies the description of each parabola. 1. A parabola whose vertex is (0, -3) 2. A parabola whose vertex is (5, 1) 3. A parabola that opens down and is compressed vertically by

asked by NAMELESS on December 31, 2018
2. ## algebra

1)What is the distance between the museum and sailing club.I cant post the graph or anything but I have my numbers right its 53 but I used the distance formula so its either 53 units or the square root of 53 units. 2)Write the equation of the parabola y=

asked by Marissa on August 20, 2007
3. ## Alg II/Trig

A parabola has a vertex at (0,0); a horizontal axis; and the point (12,6) is on the parabola. Write the equation of the parabola in standard form.

asked by Sara on February 22, 2009
4. ## math

the points (-9,0) and (19,0) lie on parabola. a.) determine an equation for its axis of symmetry: X=5 b.) the y-coordinate of the vertex is -28. determine an equation for the parabola in factored form. c.)write your equation in part b) in standard form.

asked by imurhero on June 18, 2011
5. ## College Algebra

Find the standard equation of a parabola that has a vertical axis and satisfies the given conditions. x-intercepts −2 and 8,highest point has y-coordinate 5

asked by Kyle on November 12, 2014
6. ## Math

Find the standard equation of a parabola that has a vertical axis and satisfies the given conditions. x-intercepts −2 and 8, highest point has y-coordinate 5

asked by Ashton on November 10, 2014
7. ## Algebra II

In this set of eight problems, we have to match each equation with the correct description of its graph. However, these are test corrections I'm doing and I do not have the previous multiple choice answers so I can deduct from it, but can someone help me?

asked by Emily on February 4, 2009
8. ## Algebra

Please help I can't figure out these two. Express f(x) in the form a(x − h)2 + k. f(x) = −4x2 + 24x − 9 Find the standard equation of a parabola that has a vertical axis and satisfies the given conditions. vertex (0, −7), passing through (3, 38)

asked by Eric on March 22, 2013
9. ## MATHS

a parabola passes through the points (1,1) , (2,0) and (3,1) the equation of the parabola is y=ax^2 + bx + c a) write down a system of equations representing this parabola. b) solve the corresponding system and hence write down the equation of the parabola

asked by MOHAMMED on September 28, 2010
10. ## Algebra

Write the standard form of the equation of the parabola whose vertex is 1,2 and passes through the point 0,0. The answer according to my book is 0=a(0-1)^2+2. But which 0 in the equation is the first 0 fromn (0,0) and which one is the second? Thanks!

asked by Leyla on November 27, 2009
11. ## College Algebra

Find the standard form of the equation of the parabola with the given characteristics and vertex at the origin. Passes through the point (-5, 1/8); vertical axis. There is no focus of the parabola or equation given, so how am I suppose to solve this

asked by Joy on October 14, 2013
12. ## College Algebra

Find the standard form of the equation of the parabola with the given characteristics and vertex at the origin. Passes through the point (-1, 1/8); vertical axis. There is no focus of the parabola or equation given, so how am I suppose to solve this

asked by Joy on October 14, 2013
13. ## Math

Write the equation of the line that satisfies the given conditions. Express the final equation in standard form. Contains the point (-8, 5) and is perpendicular to the line 2x − y = 4

asked by John on October 26, 2017
14. ## Math

Write the equation of the line that satisfies the given conditions. Express the final equation in standard form. Contains the point (-7, 2) and is perpendicular to the line 4x − y = 4

asked by kylee on September 30, 2015
15. ## algebra 2

Directions: The focus and directrix of a parabola are given. Write an equation for each parabola. (2,4) y = 6 May you explain the procedures on how to solve this equation? Please be detailed on each step.

asked by meg on April 2, 2008
16. ## Math

Write the equation of a parabola, in standard form, that goes through these points: (0, 3) (1, 4) (-1, -6) ax^2 + bx + c = y a * 0^2+b*0+c = 3 a*1^2+b+1+c = 4 a*(-1)^2+b(-1)+c = -6 c = 3 a + b + c = 4 a – b + c = -6 a + b + 3 = 4 a – b + 3 = -6 Graph

asked by Anonymous on June 22, 2017
17. ## Math Grade 10

41. Compare the parabola defined by each equation with the standard parabola defined by the equation y = x². Describe the corresponding transformations, and include the position of the vertex and the equation of the axis of symmetry. y = 3x² - 8 (4

asked by Ayesha on December 31, 2018
18. ## Algebra 2

I have a question and I can not figure it out. Any answers to the following along with any explanation would be great! Here is the equation: x=.2y^2-2y-3 Now I know that is an equation for a parabola. Now, I need the following: Equation in standard form

asked by Tyler on May 19, 2008
19. ## math

write an equation for the parabola with focus (1,3) and vetex (0,3) See the paragraph Analytic Geometry Equations. You will have a choice of equations, you did not state whether the axis of symettry was parallel to x or y axis.

asked by Marissa on August 12, 2007
20. ## Algebra

Can you please help me with the below question: The vertex of a parabola is located at (-12, -1). The parabola also passes through the point (-10, 5). Write the equation of this parabola in both vertex form and standard form. Vertex form: Standard form:

asked by Janae on March 4, 2017
21. ## Calculus

Great! I understand now that C0=f(a) c1=f'(a) c2=f"(a)/2 Now, If I am to find the parabolization of the equation x^2-x at x=2, then c0=x^2-x=2^2-2=2 c1=2x-1=2(2)-1=3 c2=2/2=1 So, the equation (taken from c0+c1(x-a)+c2(x-a)^2) is >> 2+3(x-2)+1(x-2)^2?? Is

asked by Matt on November 13, 2006
22. ## MATH! Urgent

umm suppose a parabola has a vertex at (0,2) and points (1,1) how would I derive the equation and focus, i've been trying to understand this for so long, I can't get it. Does this parabola have the equation (y-2)^2 = x and a focus of 1/4?? Is that

asked by sally on November 2, 2006
23. ## Pre calc

Write the equation in standard parabola form? x^2+ 4xy +4y^2 +5root5 y+ 5 = 0 Thanks so much!

asked by Rebekah on May 6, 2013
24. ## Pre calc

Write the equation in standard parabola form? x^2+ 4xy +4y^2 +5root5 y+ 5 = 0

asked by Rebekah on May 5, 2013
25. ## math

Write the standard equation for the parabola with the given characteristics. vertex:(0,0) directrix:y= -1.

asked by Breauna on January 13, 2010
26. ## NEED MAJOR HELP! *QUADRATIC EQUATIONS*

Write the equation for the circle with center at (- 8, - 6) and radius of 10. (x+8)² + (y + 6)² = 10 (x+8)² + (y + 6)² = 100 (x-8)² + (y - 6)² = 100 Find the standard equation for the circle with center on the positive x-axis and passing through the

asked by Adrianna on March 20, 2012
27. ## Math

Write an equation in standard form for each parabola. Vertex (0, 0) and directrix y = 6. y = -1/24x^2?

asked by Anonymous on May 27, 2015
28. ## Math

Write the standard form of the equation of the parabola whose directrix is x=-1 and whose focus is at (5,-2)? a) (y+2)^2 = 12(x+2) b) y-2 = 12(x+2) c) x+2 = 1/12(y+2)^2 d) x-2 = 1/12(y+2)^2 I get A and D? confused!

asked by Sophie on June 17, 2009
29. ## Geometry HOMEWORK HELP ME PLEASE!

Draw the triangle with vertices D(-2,1), U(4,9), and E(10,1) On a Graph. 2. Find DU, UE, AND DE. (Distance) 3. Classify Triangle DUE by its sides. 4. Write the standard form of the equation of each line: DU, UE, and DE.Also, find the slode and then the

asked by Brian on March 20, 2008
30. ## Algebra 2 -Conics

The directions are : Write each equation in standard form (if needed), then find appropriate information for the particular conic. the question: y=2x^2-12x+19 HOW DO I BEGIN??? Complete the square and rewrite as y = 2x^2-12x + 19 = 2(x^2 - 6x + 9)+ 19 - 18

asked by Devyn on February 15, 2007
31. ## Math

write an equation in standard form of the parabola that has the same shape as the graph of f(x)-7x squared, but which has a maximum of 9 at x=3.

asked by WANLDA on November 10, 2009
32. ## algebra 2

A quadratic equation can be written in vertex form or in standard form. Sometimes one form is more beneficial than the other. Identify which form would be more helpful if you needed to do each task listed below and explain why a. factor the equation b.

asked by wordss on October 20, 2016
33. ## Algebra2

A quadratic equation can be written in vertex form or in standard form. Sometimes one form is more beneficial than the other. Identify which form would be more helpful if you needed to do each task listed below and explain why. a- factor the equation b-

asked by Steve on October 31, 2016
34. ## alebra

write the vertex form of a parabola that satisfies the conditions given. Then write the equation in the form y=a^+bx+c. vertex (-3,-4) and a=5.

asked by madawna on November 24, 2012
35. ## Precalc

i need help with this equation anything help will be greatly appreciated find the standard equation of a parabola with a focus (-2,0) directrix x=3

asked by Natali on November 13, 2009
36. ## pre cal

What is the center of the conic whose equation is x^2 + 2y^2 - 6x + 8y = 0 2.Which one of the following equations represents a hyperbola? (5 points) A) 3x^2 + y^2 + 12x - 7 = 0 B) 3x^2 + 3y^2 + 12x - 7 = 0 C) 3x^2 + y + 12x - 7 = 0 D) 3x^2 - 3y^2 + 12x - 7

asked by Mecie on April 16, 2012
37. ## Honors Algebra 2

Write an equation in standard form of the parabola that has the characteristics below. Vertex at (1,-8); passing through the point (3,12) So I started the problem and now I'm stuck as of what to do next. Y=a(x-h)+k 12=a(3-1)^2-8 12=a(2)^2-8 12=4a-8 4=4a

asked by Anon on January 19, 2016
38. ## Math

An astronomical researcher is using software to study the parabolic path of an asteroid. By entering the equation for the path of the asteroid, the researcher could determine if the asteroid would collide with any other bodies in the near future. The

asked by Anonymous on March 24, 2014
39. ## algebra

A few more question Id like for someone to check please. 1) what are the vertex, focus, and directrix of the parabola with the given equation? x^2-8x-28y-124=0 vertex (4,-5) focus (0,7) directrix y=-12 2) write an equation of a circle with given center and

asked by lee on February 22, 2013
40. ## pre cal

find the standard form of the equation of a parabola with the vertex (0,0) and the directrix y=6 find the standard form of the equation of the ellipse with center (0,0) and foci at (+- 4square root 3, 0) and verticies (+-8,0)

asked by joe on May 25, 2007
41. ## Algebra 2

Point (-6,-2) lies on a parabola that has its vertex at (0,1). Write the equation of the parabola. Indicate whether the graph opens up or down.

asked by Dana on October 13, 2010
42. ## algebra

A parabola has x-intercepts at 3 and 7, a y-intercept at -21, and (5,4) for its vertex. Write the parabola’s equation

asked by Sandra on July 19, 2009
43. ## Algebra

I am given a graph of a parabola and I have to write a function in at least two forms that will produce the graph. I think that I can write the factored form first since I have the two x-intercepts but I don't know what the "a" is in the equation y=

asked by Holly on January 5, 2011
44. ## algebra help please

I notice that other problems are answered in a timely manner....was is my overlooked? Determine values for A, B, and C such that the equation below represents the given type of conic. Each axis of the ellipse, parabola, and hyperbola should be horizontal

asked by jenny on May 27, 2012
45. ## Algebra

Suppose a parabola has an axis of symmetry at x = -2, a minimum height at -6, and passes through the point (0, 10). Write the equation of the parabola in vertex form.

asked by Anonymous on November 30, 2016
46. ## Math

determine vertex, focus and directrix of parabola. then graph the parabola. first equation: y^2 -2x-8=0 second equation: y^2 -4y -12x= 8 please show your work!

asked by doug on May 18, 2008
47. ## calculus

Find the area of the largest rectangle that has its lower base on the x-axis and its upper vertices on the parabola whose equation is given by Y=12-x^2. i graphed the equation but its gives me a parabola, so i don't know what to do after that

asked by maricela on May 10, 2007
48. ## Algebra

I have a parabola that I have to write as an equation I found the vertex as (-3,-2) and the following points (-4,-1)(-2,-1),(-5,2),(-1,2). I can't seem to come up with the correct equation. I'm using the formula y=a(h-k)^2+k but I'm not doing something

asked by Jennifer on May 15, 2011
49. ## Algebra II

Write an equation for a parabola that opens upward from its vertex at (-4,3). What is the equation of its line of symmetry?

asked by Sam on November 27, 2012
50. ## MATH

47. The equation y = 4.5x² + 9x + 15 describes the height of a diver, in metres, at x seconds. Change this equation into vertex form by completing the square. State the y-intercept, the equation of the axis of symmetry, and the vertex. B. Before locating

asked by pewdiepie on December 31, 2018
51. ## Math Help

With the given information below, write the standard form equation for the parabola. 1.) Vertex: (-1,2) Focus(-1,0) 2.) Vertex: (-2,1) Directrix x=1

asked by Katie on May 6, 2015
52. ## algebra 2

Determine values for A, B, and C such that the equation below represents the given type of conic. Each axis of the ellipse, parabola, and hyperbola should be horizontal or vertical. Then rewrite your equation for each conic in standard form, identify (h,

asked by jenny on May 27, 2012
53. ## algebra 2

Determine values for A, B, and C such that the equation below represents the given type of conic. Each axis of the ellipse, parabola, and hyperbola should be horizontal or vertical. Then rewrite your equation for each conic in standard form, identify (h,

asked by jenny on May 27, 2012
54. ## Algebra II

I am lost on this one!!! Determine values for A, B, and C such that the equation below represents the given type of conic. Each axis of the ellipse, parabola, and hyperbola should be horizontal or vertical. Then rewrite your equation for each conic in

asked by Jared on May 28, 2012
55. ## math

determine vertex, focus and directrix of parabola. then graph the parabola. first equation: y^2 -2x-8=0 second equation: y^2 -4y -12x= 8

asked by doug on May 18, 2008
56. ## math

How would I find the right window to graph a parabola in? The equation is -8874.6x+113537.2 My teacher said that if the parabola should be tight. But I can't seem to graph this equation. I don't know window I should use on my graphic calculator for this

asked by Mariah on March 16, 2008
57. ## Quadratic Equations and Functions

I started having trouble on part (c), and I need to know this before I can go onto the other problems. Plz help! The parabola shown at the right (no picture, sorry) is of the form y=x^2+bx+c. The graph's y-intercept is (0,2), the axis of symmetry is -2.5

asked by Emily on February 4, 2007
58. ## pre cal

write the standard form equation of the parabola with vertex (-2,-2) that goes through point (-1,0) y= a (x-b)^2 + c b has to be -2, that gives the shift to the left. y=a( x+2)^2 + c when x=-2, y=-2, that makes c -2 y=a( x+2)^2 -2 finally, put the point

asked by jason on March 5, 2007
59. ## Math

If f(x)=3x^2-5x, find the f'(2) & use it to find an equation of tangent line to the parabola y=3x^2-5x at the point (2,2). My ans is f'(2)=7 & y=7x-12. What is parabola exactly? & is the any possibility if the eqtn of f(x) is not the same with parabola

asked by Ifi on October 28, 2012
60. ## Math(check)

1)Find the range of the relation [(-1,4)},(2,5),(3,5)}.Then determine whether the relation is a funtion. 4,5,5 is the range 4,5 is a function 2)Find f(-1),if f(x)= x^2-6x/x+2 (-1)^2-6(-1)/-1+2 1+6/-1+2 7/1 =7 3)Find f(a),if f(t)= 2t^2-t-2. 2(a)^2-a-2

asked by erin on July 26, 2007
61. ## Quadratic Equations and Functions

I started having trouble on part (c), and I need to know this before I can go onto the other problems. Plz help! The parabola shown at the right (no picture, sorry) is of the form y=x^2+bx+c. The graph's y-intercept is (0,2), the axis of symmetry is -2.5

asked by Emily on February 4, 2007
62. ## Calc

Let f be the function that contains the point (-1,8) and satisfies the differential equation dy/dx=10/(x^2+1) (a) Write the equation of the tangent to f at x=-1. (b) Use your equation in part a to estimate f(0). (c) We know that the integral from -1 to 0

asked by Anon on February 15, 2014
63. ## math

A parabola has the equation y = 4(x-3)^2-7 Choose 2 true statements: A) The parabola has a minimum value B) The parabola has a maximum value C) The parabola does not cross the y-axis D) The parabola does not cross the x-axis E) The vertex of the parabola

asked by claudia on May 15, 2007
64. ## Algebra

Write the equation for the conic section of the cone is centered at (0,0), the major axis is 10 units and the minor axis is 6 units. (Ellipse) Write the equation for the conic section if the vertex is (-6,4) and the focus is (-6,7) (Parabola) Write the

asked by Kylie on May 10, 2017
65. ## precallcuslus

can you check my work and explain the last question because I do not uderstand. Explain what each of the following represents, and how y = a(x - h)2 + k, a ≠ 0 and (x - h)2 = 4p(y - k), p ≠ 0 are equivalent. The equation (x - h)2 = 4p(y - k), p ≠ 0

asked by Anonymous on December 5, 2016
66. ## Math

1. Find the slope of the line that passes through the points (-1, 2), (0, 5). 2. Suppose y varies directly with x, and y = 15 and x = 5. Write a direct variation equation that relates x and y. What is the value of y when x = 9? 3. Write an equation in

asked by PicturesDon'tChangeThePeopleInsideOfThemDo on December 13, 2017
67. ## math

A parabola has the equation y = 4(x-3)^2-7 Choose 2 true statements: A) The parabola has a minimum value B) The parabola has a maximum value C) The parabola does not cross the y-axis D) The parabola does not cross the x-axis E) The vertex of the parabola

asked by claudia on May 14, 2007
68. ## Math

I have 2 questions that I need help with if someone could please help me step by step to figure out how to do this equation it would be very helpful. Thank you 1. Suppose y varies directly with x and, y=15 and x=5. Write a direct variation equation that

asked by Anonymous on November 29, 2016
69. ## algebra

The equation -5x-3y=2 is a linear equation in standard form. From this equation, answer the following:a. Find the y and x-intercepts b. Write this equation in slope-intercept form.

asked by Keonn'a on September 16, 2018
70. ## Standard Form

Find the equation in standard form for the line that satisfies the given requirements. passing through (1, 5) and (2, 6)

asked by jay on January 24, 2017
71. ## conics

The graph of y=x^2 is reflected in the x-axis, then stretched vertically by a factor of 2, and then translated 3 units to the left and 1 unit down. I need to write the equation of this parabola in standard and general form. I have 4 other questions so

asked by Sandy on March 15, 2010
72. ## math

(A)Write the equation in standard form and calculate its discriminant. (B)Solve the equation by using the quadratic formula. (C)After solving the equation, write it in factored form. 7x(x-2)+2(x+4)=3 Please help!!!!! :(

asked by Andrea on April 23, 2018
73. ## math

(A)Write the equation in standard form and calculate its discriminant. (B)Solve the equation by using the quadratic formula. (C)After solving the equation, write it in factored form. 1/8x^2=x-5/2 Please help!!!!! :(

asked by Andrea on April 18, 2018
74. ## math

(A)Write the equation in standard form and calculate its discriminant. (B)Solve the equation by using the quadratic formula. (C)After solving the equation, write it in factored form. 0=8+4t-t^2 Please help!!!!! :(

asked by Andrea on April 19, 2018
75. ## math

The solutions to a quadratic equation are 3/8 and 2/5. Write the quadratic equation in standard form show all appropriate work. (standard equation: f(x)=a(x-h)^2+k)

asked by shannon on September 25, 2008
76. ## Math

14) Consider the parabola with equation y = x^2 - 6x + 5. a. Use any suitable method to determine the coordinates of the turning point of this parabola. b. Hence, state for which values of c the line y = c will intersect the parabola: i. twice ii. once

asked by Anonymous on September 20, 2018
77. ## Algebra

what is the equation, in standard form, of a parabola that contains the following points? (-2-20). (0-4), (4-20)

asked by Helen on December 18, 2013
78. ## algebra

what is the equation in standard form of a parabola that contain the following points? (-2,-20),(0,-4),(4,-20) Please Help

asked by Lee on October 29, 2012
79. ## Algebra 2 (Math)

What is the equation, in standard form, of a parabola that contains the following points? (-2, -20), (0, -4), (4, -20)

asked by Reese on December 3, 2015
80. ## math

how do you determine an equation of a parabola in standard form.

asked by ted on November 24, 2010
81. ## find the equation

Find the equation in standard form for the line that satisfies the given requirements. slope −3, x-intercept (8, 0)

asked by jay on January 24, 2017
82. ## algebra

Suppose a parabola has vertex (-4,7) and also passes through the point (-3,8), write the equation of the parabola in vertex form.

asked by Lilah on November 2, 2015
83. ## algebra

Suppose a parabola has a vertex (-4,7) and also passes through the point (-3,8) Write the equation of the parabola in vertex form. f(x)=a(x-h)^2+k I believe h=-4 k=7 Not sure what to do from here.

asked by Lee on October 29, 2012
84. ## algebra

y=2x^2+5x-3 a)determine the x-intercepts b)determine the vertex c)determine the axis of symmetry d)determine the maximum or minimum value, stating whether it is a maximum or a minimum e)determine the range can i get the equations so i can try them myself?

asked by Shay on January 18, 2007
85. ## calculus-differential equation

Consider the differential equation: (du/dt)=-u^2(t^3-t) a) Find the general solution to the above differential equation. (Write the answer in a form such that its numerator is 1 and its integration constant is C). u=? b) Find the particular solution of the

asked by Jeff on February 5, 2008
86. ## College algebra

A fountain in a shopping mall has two parabolic arcs of water intersecting. The equation of one parabola is y = -0.25x^2+2x and the equation of the second parabola is y=-0.205x^2+4x-11.75. How high above the base of the fountain do the parabolas intersect?

asked by Missy on May 5, 2012
87. ## Algebra

I know that standard form is Ax+By=C, but I'm not really sure how to do this problem. All help is welcome. Thanks in advance. Write an equation for each line: through (-1,3) and parallel to y=2x+1 I know that the slop will be 2 because it is parallel. If

asked by Faramir on September 25, 2006
88. ## algebra

1)Write an equation for an ellipse if the endpoints of the major axis are at(1,6)and (1,-6)and the endpoints of the minor axis are at (5,0)and (-3,0) answer= (x-1)^2/36+y^2/16=1 2)Which is the equation of an ellipse with center (-4,2)and a horizontal major

asked by Marissa on August 20, 2007
89. ## Algebra

what is the equation in standard form of a parabola that models the value in the table? x -2,0,4 fx 1,5,-59

asked by Link on March 28, 2016
90. ## College Algebra.

Find the equation in standard form of the hyperbola that satisfies the stated condition. Foci (0,5) and (0,-5), asymptotes y = x and y =-x

asked by Nicki on December 17, 2009
91. ## Algebra one, help me please?

Okay so, I have to write an equation in standard form, of a line that passes through the given point and has the given slope, ( M) or that passes through the given points. Heres what I think: 1)( 4,-1) M= 3 So, it's in y=3x+B and then, I would plug in -1

asked by Allyson on November 29, 2010
92. ## calculus

Q.NO.3: Show that the function z=tan^-1(2xy/x^2-y^2)satisfies Laplace’s equation; then make the substitution x=r cosθ, y= r sinθ and show that the resulting function of satisfies the polar form of laplace’s equation

asked by akash on May 12, 2017
93. ## algebra II

Can you please help me with the these problems. 8.Write an equation in standard form of the parabola that has the same shape as the graph of f(x) = 11x^2, but which has its vertex at (2, 9). 10. Use the vertex and intercepts to sketch the graph of the

asked by Ashley on October 13, 2007
94. ## math

Find an equation in standard form for the hyperbola that satisfies the given conditions. Center at​ (0,0) a=4​, e=2​, horizontal focal axis

asked by Sam on February 14, 2019
95. ## Algebra

What is the equation, in standard form, of a parabola that models the values in the table x (-2,0,4) F(x) (2.5,1.5,-60.5)

asked by Aaron on January 10, 2017
96. ## algebra

What is the equation in standard form of a parabola that models the values in the table? x -2 0 4 f(x) 1 5 -59

asked by jayson on October 29, 2012
97. ## algebra

What is the equation in standard form of a parabola that models the values in the table? x -1 0 2 f(x) 12 5 15

asked by Anonymous on December 16, 2014
98. ## Algebra2

What is the equation, in standard form, of a parabola that contains the following points? (-2,-20),(0,-4),(4,-20) 1- y=-2.5x^2+5x 2-y=-x^2+4x-4 3- y=-2x^2+4x-4 4-y=-2.25xx^2+4.5x-2 My answer is 3

asked by Steve on September 30, 2016
99. ## Pre-Calc

What is the standard form of the equation of the parabola that has a vertex at (4, 3) and passes through the point (-4, -2)? Is it f(x) = -5/64(x - 4)^2 + 3?

asked by Anonymous on January 27, 2016
100. ## CAlculuss

Find, in standard form, the equation of : the parabola with focus at (3,5) and directrix at x=-1

asked by Jen on November 22, 2017