Introduction to Quadratics and FOIL

What is the y intercept of this graph?

• 3

• 2

• 1

• 0

Tags

CCSS.HSF-IF.C.7A

Does this open upwards or downwards?
y= -x² -4x -5

• up

• down

Tags

CCSS.HSF-IF.C.7A

Does this open upwards or downwards?
y= -3x² + 6x - 6

• up

• down

Tags

CCSS.HSF-IF.C.7A

What is the y-intercept?
y= -3x² + 6x - 6

• -3

• 6

• -6

• 3

Tags

CCSS.HSF-IF.C.7A

How many solutions are there?

• 0

• 1

• 2

Which quadratic equation models the parabola shown?

• y = (x-2)(x-5)

• y = (x+2)(x+5)

• y = -(x+2)(x+5)

• y = -(x-2)(x-5)

Tags

CCSS.HSF-IF.C.7A

Standard form of a quadratic equation

• y=x²

• y=ax²+bx+c

• y=mx+b

• y=x

What is the axis of symmetry?
y= -x² -4x -5

• 4

• -4

• 2

• -2

f(x) = 3x² - 4 is a quadratic function

• true

• false

Which of the following is NOT a quadratic function

• f(x) = -3x²

• f(x) = -5x - 3x²

• f(x) = 3x - 4x² + 5

• f(x) = 3x + 5