Equations in Quadratic Form

What is the y-intercept of the following equation?
y=-x²-3x-4

• (0, 1)

• (0, -4)

• (-4, 0)

• (0, 4)

Tags

CCSS.HSF-IF.C.7A

Identify a, b, and c if y = -8+3x²+5x

• a=3, b=5, c=-8

• a=-8, b=3, c=5

• a=3x², b=5x, c=-8

• a=3x² , b=-8, c=5x

What is the equation for axis of symmetry?

• y = 3

• x = 3

• 3

• x= 1 and x = 5

Select the solutions to the equation

4x² + 11x + 7 = 0

• x = - 1.75

• x = 6

• x = - 1

• x = 1

A ​ (a)   in one variable is an equation that can be written in the ​ (b)   ​ (c)   , where a, b, and c are ​ (d)   and ​ (e)   .

• quadratic equation

• standard form

• real numbers

Match the following equations with their correct form.

• Quadratic Formula

• f(x) = a(factor)(factor)

• Standard form of a quadratic equation

• f(x) = ax² + bx + c

• Vertex Form

• Factor Form

• f(x) = a(x - h)² + k

What are the solutions to the quadratic equation?

• x = -4

• x = 1

• x = -1

• x = 2

• x = 4

The quadratic function y = -2x² + 4x + 6 is pictured. What are the solutions to the equation 7.5 = -2x² + 4x + 6?

• x = 0.5

• x = 1.5

• x = 1

• x = 8

• x = 6

What are the green dots called?

• axis of symmetry

• vertex

• parabola

• roots, zeros, solutions, or x-intercepts

Tags

CCSS.HSF-IF.C.7A

What is the vertex?
f(x) = -x² - 4x + 12.

• (-2, 16)

• (2, 0)

• (2, 4)

• (-2, 4)