Modelling Quadratics

y = -3x² + 9

• linear

• quadratic

• neither

y = 2

• linear

• quadratic

• neither

y = x + 2

• quadratic

• linear

• neither

x³-5 =y

• linear

• quadratic

• neither

How do I find…

The time it takes to get to the highest point?

• Find the x-value using the axis of symmetry

• Find the axis of symmetry and substitute it into the equation

• Find the y-intercept

• Find the x-intercepts and choose positive value

How do I find…

When an object hits the ground?

• Find the x-value using the axis of symmetry

• Find the axis of symmetry and substitute it into the equation

• Find the y-intercept

• Find the x-intercepts and choose positive value

How do I find…

The starting point of an object that is dropped?

• Find the x-value using the axis of symmetry

• Find the axis of symmetry and substitute it into the equation

• Find the y-intercept

• Find the x-intercepts and choose positive value

What is the equation for the axis of symmetry?

• y=3
• x=3
• x=5
• x=1

Tags

CCSS.HSF-IF.C.7A

What is the green dot on the parabola called?

• maximum
• minumum
• roots
• zeros

Tags

CCSS.HSF-IF.C.7A

What are the x- intercepts?

• x= 0 and x= -4
• x= 0 and x= 4
• y= 0
• x= 2

Tags

CCSS.HSF-IF.C.7A