Review for Quadratic Functions Test

Simplify in standard form ax² + bx + c: (3x - 4)(x + 3)

• 3x² -x - 12

• 3x² + 5x - 12

• 3x² - x + 12

• 3x² - 5x + 12

Tags

CCSS.HSA.APR.A.1

The x-intercepts of a parabola are (2, 0) and (8, 0). What is the line of symmetry?

• y = 3

• x = 3

• y = 5

• x = 5

What is the y-intercept of h = -16t² + 62t?

• -16

• 0

• 62

• There is no y-intercept.

Tags

CCSS.HSF-IF.C.7A

What is the vertex of y = x² - 6x - 7

• (0, -7)

• x = 3

• (3, -16)

• y = -16

A football is kicked from a height of 2 feet with an initial upward velocity of 50 feet per second.

This is modeled by: h = -16t² + 50t + 2.

When will the ball reach its maximum height?

• 2 seconds

• 1.56 seconds

• 3.16 seconds

• 41.0624 feet

Simplify in standard form ax² + bx + c:

8 + 5(x - 2) - 3x(x - 4) - 6x²

• -3x² + 17x - 2

• -9x² + 17x - 2

• -3x² - 7x - 2

• -9x² - 7x - 2

Tags

CCSS.6.EE.A.3

How does the graph of y = 2x² change compared to y = x² ?

• Narrower

• Shifts up 2

• Wider

• Reflection across x-axis

What is true about the graph of y = x² - 8x + 15?

• Opens down, has a maximum, has y-intercept of (0, 15).

• Opens up, has a maximum, has y-intercept of (15, 0).

• Opens down, has a minimum, has a y-intercept of (15, 0)

• Opens up, has a minimum, has a y-intercept of (0, 15)

Tags

CCSS.HSF-IF.C.7A

A football is kicked from a height of 2 feet with an initial upward velocity of 50 feet per second.

This is modeled by: h = -16t² + 50t + 2.

When will the ball hit the ground?

• 1.56 seconds

• 2 seconds

• 3.16 seconds

• Never

What equation matches the graph?

• y = x² + 2x - 3

• y = x² - 2x - 3

• y = x² + 2x + 3

• y = x² - 2x + 3