algebra

1)Identify the y-intercept and the axis of symemetry for the graph of f(x)=-3x^2+6x+12.
answer=12:x=1

2)Determine whether f(x)=-5x^2-10x+6 has a maximum or minimum value and find that value.
answer=maximum -1

3)Solve x^2=4x by graphing and indicate the roots.
answer=0,4

4)Solve x^2+2x=-2 by graphing and indicate the roots.
answer=-1,1

5)Solve by factoring:x^2-3x=28
answer=-4,7

#1, I got x=-1

#2, no
the function opens up, so there is a minimum.
it occurs when x=-1, and that minimum is f(-1), which is 11

#3, ok
#4 graphing f(x) = x^2 + 2x + 2
produces a parabola which lies above the x-axis, so there is no real solution.

#5 ok

  1. 👍
  2. 👎
  3. 👁

Respond to this Question

First Name

Your Response

Similar Questions

  1. Mathematics

    For question 1 & 2, find the x- and y-intercept of the line. 1. -10x + 5y = 40 A. x-intercept is 5; y-intercept is -10 B. x-intercept is 8; y-intercept is -4 C. x-intercept is -10; y-intercept is 5 D. x-intercept is -4;

  2. geometry

    In the graph below, point D is reflected across the y-axis. What are the coordinates of it's image? The graph looks like D is below the x-axis to the right 3 places from y-axis and down 1 place from x-axis. So would my answer be

  3. Math

    4. Describe the behavior of the graph at the x-intercepts for the function f(x) = (2x-7)^7 (x+3)^4. Be sure to identify each x-intercept and justify your answer. How does each exponent change the look of the graph at the x-axis?

  4. MATH

    Lesson 10: Linear Functions Unit Test Algebra 1 A Unit 6: Linear Functions (Connections Academy) 1.a yes: y=1.2x 2.d no; y does not vary directly with x 3.d graph going from (-10, -5) to (10, 3) 4.d graph going from (-10, -3) to

  1. Algebra

    1.Write the equation of a line that is perpendicular to the given line and that passes through the given point. y-3=8/3(x+2); (-2, 3) A.y+3=-3/8(x-2) B.y-3=-3/8(x+2) C.y-2=-3/8(x+3) D.y+3=3/8(x-2) 2.Describe how the graph of y=/x/

  2. Algebra

    Graph y=5^x and y=log_5 x on a sheet of paper using the same set of axes. Use the graph to describe the domain and range of each function. Then identify the y-intercept of each function and any asymptotes of each function. So far

  3. algebra

    could you help me with the following,I don't understand. Find the x-intercepts of the polynomial function. State whether the graph crosses the x-axis, or touches the x-axis and turns around, at each intercept. 1.f(x) = (x + 1)(x -

  4. Algebra

    For each equation, determine whether its graph is symmetric with respect to the -axis, the -axis, and the origin. 4y^4+24x^2=28 and y=1/x^2+5 Check all symmetries that apply x-axis,y-axis,origin or non of the above.

  1. algebra 1

    If the graph of a line has a positive slope and a negative y-intercept, what happens to the x-intercept if the slope and y-intercept are doubled? A) The x-intercept becomes 4 times larger B) The x-intercept becomes twice as large

  2. Algebra

    A charity organization had to sell 18 tickets to their fundraiser just to cover necessary production costs. They sold each ticket for \$45. Let y represent the net profit (in dollars) when they have sold x tickets. Which of the

  3. algebra

    Identify the vertex and axis of symetry of the parabola. Identify points corresponding to P and Q. on the graph it has P at (-2,4) and a point at Q at (-1,7). my teacher says the answers were the vertex was (-1,3) the Axis of

  4. Gr.11 - Rational functions graphing.

    1. Identify a rational function whose graph is a horizontal line except for two holes. Graph the function. 2. Identify a rational function who graph lies entirely above the x-axis and has a single vertical asymptote. Graph the

You can view more similar questions or ask a new question.