# Math

Lesson 8: Systems of Linear and Quadratic Equations
Check my work
1. Solve the system of equations.
y = 2x^2 - 3
y = 3x - 1
a. no solution
b. (-1/2, 5), (2, -5/2)
c. (-1/2, -5/2), (2,5)***
d. (1/2, 5/2), (2, 5)
2.how many real number solutions does the equation have 0 = -3x^2 + x - 4
a. 0***
b. 1
c. 2
d. 3
3. solve the equation by completing the square. If necessary round to the nearest hundredth.
x^2 - 18x = 19
a. 1; 19
b. -1; 19***
c. 3; 6
d. -3; 1
4. solve. x^2 - 81 = 0
a. 0
b. -9
c. -9, 9***
d. 9
5. which model is most appropriate for the data shown in the graph below? (need wedsite to know the problem)
b. linear
c. exponential***
d. line
for questions 6-9, match the equation to its corresponding graph.
(need wedsite to know the problem)
a, b, c, d
6. a y=-2x^2+2
7. d y=-x^2
8. c y=2x^2
9. b y=3x^2-4
Graph the quadratic functions y = -2x^2 and y = -2x^2 + 4 on a separate piece of paper. Using those graphs, compare and contrast the shape and position of the graphs.

y=-2x^2+4 is just 4 units up from y=-2x^2

1. 👍
2. 👎
3. 👁
1. #1 - 4, correct
#5, can't tell , can't see any graph

1. 👍
2. 👎
👤
Reiny
2. is the last one correct

1. 👍
2. 👎
3. y=-2x^2+4 is just 4 units up from y=-2x^2 ?

yes

1. 👍
2. 👎
👤
Reiny
4. 100% All Correct Just Did it and got a 100%

1. 👍
2. 👎
5. gamenight is right :) all right

1. 👍
2. 👎
6. Here are the correct answers;
1. C (-1/2, -5/2), (2,5)
2. A 0
3. B -1;19
4. C -9,9
5. C Exponential
MATCHING
6. A
7. D
8. C
9. B
10. ESSAY

1. 👍
2. 👎
7. Ro is right I got 9/9 with upgraded 3 possible points. Thank you

1. 👍
2. 👎
8. You're welcome!

1. 👍
2. 👎
9. Gameknight is right i got a 9/9 and 3 possible points.

1. 👍
2. 👎
10. thanks SOOOO much everyone here!! :3

1. 👍
2. 👎

## Similar Questions

1. ### algebra

Unit 4: Quadratic Functions and Equations Lesson 6: The Quadratic Formula and the Discriminant 1.) a=5, b=9, c=-4 2.) C 3.) No solution 4.) x=-2, x=1.25 5.) x=-9, x=3 6.) quadratic formula 7.) 2 8.) 11cm by 16cm

2. ### Algebra

1.Solve the system of equations. y = 2x^2 - 3 y = 3x - 1 a. no solution b. (-1/2, 5), (2, -5/2) c. (-1/2, -5/2), (2,5) d. (1/2, 5/2), (2, 5) 2.how many real number solutions does the equation have 0 = -3x^2 + x - 4 a. 0 b. 1 c. 2

3. ### HELP !!! Algebra 2

15. What is the solution of the linear-quadratic system of equations? {y = x^2 + 5x - 3} {y - x = 2}

4. ### How do I do this.?(Math.)

Use the Substitution method to solve the system of equations. y - 2x = -5 3y - x = 5 Solve one of the equations for x or y. Let's solve the first one for y: y - 2x = -5 y = 2x - 5 Now let's substitute 2x - 5 for y in the second

1. ### Algebra

Which of the following represents all solutions (x,y) to the system of equations created by the linear equation and the quadratic equation y=x^2+9

2. ### Check My Answers for Science!

1: Which of the following is the minimum level of structure needed to perform the function of waste removal? A: Body System B: Tissue C: Cell*** D: Organ 2: Which two systems work with the muscular system to allow the body to

3. ### linear systems

The statement that is false is A. A system of quadratic-quadratic equations can have exactly one solution. B. A system of quadratic-quadratic equations has no solutions if the graphs do not intersect. C. It is impossible for a

4. ### Algebra

Create a system of equations that includes one linear equation and one quadratic equation. Part 1. Show all work to solving your system of equations algebraically. Part 2. Graph your system of equations, and show the solution

1. ### Algebra

Find the number of the solutions to each system. a. 4x-y+1=0 4x-y+3=0 b. 2x-y+4=0 4x-2y+8=0 Write a question that can be solved using a system of linear equations. Solve the following system of equations by graphing: y=x+3 and