Mathematics

Casey Mcclure

13 April, 14:16

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 numbers solution are there to the equation a=3x^2+x-4

a. 0

b. 1

c. 2

d. 3

3. solve the equation by completing the square

x^2-18x=19

a. 1; 19

b. - 1; 19

c. 3; 6

d. - 3; 1

4. solve x^-81=0

a. 0

b. - 9

c. - 9,9

d. 9

5. solve y=-2x^2+2

6. solve y=-x^2

7. solve y=2x^2

8. solve y=3x^2-4

9. Graph the quadratic functions y=-2x^2 and y=-2x^2+4 on a separate sheet of paper. Using those graphs, compare and contrast the position and shape of the graphs. explain!