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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!

+4
Answers (2)
  1. 13 April, 17:18
    0
    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
  2. 13 April, 17:28
    0
    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
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Home » Mathematics » 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.
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