Pre-Unit Quadratics

Solve Using the Quadratic Formula

• -3, 4

• 3, 4

• -4, -3

• -3

Tags

CCSS.HSA-REI.B.4B

Teresa throws a baton in the air. The baton reaches a height which is modeled by the function f(x) = -16x² +48x, where x represents time, in seconds, and f(x) represents the height of the baton in feet. How many seconds will it take the baton to return to Teresa?

• 0 seconds

• 1 seconds 

• 2 seconds

• 3 seconds

A ball is thrown vertically into the air.  Its height in feet after t seconds is given by the equation h(t) = –5t² + 20t, and is graphed below.  How high will the balloon be after 3 seconds?

• 20 ft

• 15 ft

• 5 ft

• 10 ft

Solving using the square root:
2x²-288=0

• x= -144 and x= 0

• x= -12i and x= 12i

• x= -12 and x= 12

• x= 0 and x= 144

Tags

CCSS.8.EE.A.2

• Linear

• Exponential

• Quadratic

• Non-function

What is the standard form of a Quadratic function?

• ax²+bx+c

• ax²+bx-c

• ax²-bx+c

• ax²-bx-c

Which of the following represents a quadratic function?

A Quadratic Function is... (check all that apply)

• a "U" shape

• called a parabola

• has a vertex

• the end behaviors go in opposite directions

• appearing to go flat on one side

Tags

CCSS.HSF-IF.C.7A

Define Axis Of Symmetry

• A line that divides the graph into two equal parts. i.e. cuts the graph in half

• Where the parabola touches or intersects the x-axis, also called the x-intercept

• The highest y-value on the graph

• The highest or lowest point on the graph

What is the parent function of a quadratic equation?

• f(x)=x

• f(x)=x²

• f(x)=ax²+bx+c

• f(x)=a(x-h)²+k