Quadratics

What is the equation of the parabola in factored form?

• y = (x + 2)(x - 1)

• y = (x - 2)(x + 1)

• y = (x - 2)(x - 1)

• y = (x + 2)(x + 1)

What are the roots of the parabola?

• x = 0 and -4

• x = 0 and 4

• y = 0

• x = 2

Factor: x² – 5x – 24

• (x - 5)(x + 19)

• (x - 8)(x + 3)

• (x - 3)(x + 8)

• (x - 19)(x + 5)

Factor: x² + 2x – 3

• (x - 2)(x + 1)
• (x + 1)(x - 3)
• (x + 2)(x - 1)
• (x - 1)(x + 3)

Tags

CCSS.HSA.REI.B.4

CCSS.HSA.SSE.A.2

CCSS.HSA.SSE.B.3

Factor: k² -2k - 24

• (k + 4)(k - 6)

• (k + 4)(k + 6)

• (k + 6)(k - 1)

• (k - 4)(k + 6)

A quadratic function has zeros at -7 and 9. What are the factors of the function?

• (x + 7) and (x - 9)

• (x - 7) and (x + 9)

• (x + 7) and (x + 9)

• (x - 7) and (x - 9)

What is the y-intercept for the quadratic function: y = -8x² + 3x - 7?

• (0, -8)

• (0, 3)

• (-8, -7)

• (0, -7)

Hank hit a fly ball. The height of the ball can be described by the equation:

h(t) = -16t² + 140t + 2

What was the starting height of the ball?

• -16 feet

• 140 feet

• 2 feet

• 0 feet

What is the vertex of the quadratic function: y=2(x - 3)² + 8?

• (3, 8)

• (-3, -8)

• (-3, 8)

• (3, -8)

A quadratic function has the equation: y = -3x² - 7x + 8. What does the -3 tell you about the appearance of the graph?

• the axis of symmetry is x = -3

• the parabola opens down

• the y-intercept is -3

• the max is -3