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!

Question

Aedan Perkins

Mathematics

26 June, 03:29

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!

+2

Answers (2)

Know the Answer?

Jerimiah Foley · Answer 1

1. (-1/2,-5/2), (2,5)

2.0

3.-1,19

4.-9,9

5. exponential

6. a

7. d

8. c

9. b

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

Tally · Answer 2

Problem #1. c. (-1/2,-5/2), (2,5)

#3 x^2 - 18x + 81 = 19+81 (18/2) ^2

(x-9) ^2 = 100

x-9 = + or - square root of 100

x = 9 + or - 10

x = 19 and - 1