Quiz about Staar Quadratics

Question 1

What is the y-intercept of the following equation:
y= (x-1)² - 6?

Accepted Answer

-5

Answer

-7

Answer

0

Answer

5

Question 2

When x² is changed to x² -3, the graph

Accepted Answer

Shifts down 3 units.

Answer

Shifts left 3 units.

Answer

Shifts right 3 units

Answer

shifts up 3 units.

Question 3

What is the green dashed line called?

Accepted Answer

axis of symmetry

Answer

roots or x-intercepts

Answer

parabola

Question 4

What is the equation for axis of symmetry?

Accepted Answer

x=3

Answer

y=3

Answer

x=5

Answer

x=1

Question 5

Does the graph of this equation open up or down?
f(x) = -(x + 3)² - 5

Accepted Answer

down

Answer

up

Question 6

If the blue graph is
f(x) = x²
then the red must be...

Accepted Answer

g(x) = x²- 5

Answer

g(x) = x²+ 5

Answer

g(x) = (x - 5)²

Answer

g(x) = (x + 5)²

Question 7

Which of the following statements about the function j(x) = -2(x + 3)² + 9 is FALSE?

Accepted Answer

The function j(x) is shifted right 3 units compared to the parent function

Answer

The function j(x) is shifted up 9 units compared to the parent function

Answer

The function j(x) is narrower than the parent function

Answer

The function j(x) is reflected across the x-axis compared to the parent function

Question 8

Which transformation transforms the graph of
f(x) = x² to the graph of g(x) = (x + 4)²?

Accepted Answer

a horizontal translation 4 units to the left

Answer

a vertical translation 4 units up

Answer

a vertical translation 4 units down

Answer

a horizontal translation 4 units to the right

Question 9

Which is the parent function of a parabola?

Accepted Answer

y = x2

Answer

y = 2x² + 3

Answer

y = -x² -4

Answer

y = -x2

Question 10

If a toy rocket is launched vertically upward from ground level with an initial velocity of 128 feet per second, then its height h after t seconds is given by the equation
h(t) = -16t² +128t
When will the object reach its maximum height?

Accepted Answer

4 seconds

Answer

4 ft

Answer

0 seconds

Answer

0 ft

Question 11

Find the sum.
(2x²+ 5x - 7) + (3 - 4x²+ 6x)

Accepted Answer

-2x² + 11x - 4

Answer

2x²+ 3x + 1

Answer

-2x²- 11x - 4

Answer

2x² + 5x - 7

Question 12

Find the difference.
(3 - 2x + 2x²) - (4x - 5 + 3x²)

Accepted Answer

-x²-6x + 8

Answer

x_² + 6x + 8

Answer

2x²+ 5x - 7

Answer

-2x² + 11x - 4

Question 13

Which of the following is one of the roots of the function? f(x) = (x+3)(x-6)

Accepted Answer

-3

Answer

2

Answer

-2

Answer

-6

Question 14

.How many zeros does this parabola have?

Accepted Answer

2

Answer

3

Answer

0

Answer

1

Question 15

Factor:
x² + 10x + 24

Accepted Answer

(x + 6)(x + 4)

Answer

(x + 8)(x + 3)

Answer

(x + 12)(x - 2)

Answer

(x + 12)(x + 2)

Question 16

Determine the roots
x² + 7x = -12

Accepted Answer

x = -3, x = -4

Answer

x = 7, x = -4

Answer

x = 3

Answer

x = 3, x = 4

Question 17

Factor:
x² - 14x + 24

Accepted Answer

(x - 12)(x - 2)

Answer

(x - 8)(x - 3)

Answer

(x - 6)(x - 4)

Answer

(x - 24)(x - 1)

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