Quadratic Notes

P5 A. The ​ (a)   of the ​ (b)   is the ​ (c)   value of the function.

• y-coordinate

• vertex

• minimum

• x-coordinate

• axis of symmetry

• maximum

What are the a, b, and c for the quadratic: 2x²-9x-5=0

• a = 2; b = -9; c = -5

• a = -2; b = 9; c = 5

• a = -9; b = -5; c = 0

• a = -4; b = 2; c = -5

If you have a constant change in x-values, and a constant change for the second difference in y-values, what type of function do you have?

• Linear

• Quadratic

• Exponential

• Cubic

The area of a poster board is x²+3x-10 inches. The width is x-2 inches. Write an expression for the length of the poster board.

• 7

• x+3

• x-2

• x+5

Factor x²+x-42

• (x-7)(x+6)

• (x+7)(x-6)

• x²+x

• (-7)(6)

Complete the square:

x²-14x+______

• 7

• -14

• 14

• 49

Tags

CCSS.HSA-REI.B.4B

Can you find the Axis of Symmetry by averaging the zeros?

• Yes

• No

Tags

CCSS.HSF-IF.C.7A

If the graph does not touch the graph, can it still have an Axis of Symmetry?

• Yes, the Axis of Symmetry still goes down the middle of the parabola at an x-value

• No, a parabola needs to touch the x-axis to have an Axis of Symmetry at an x-value

Tags

CCSS.HSF-IF.C.7A

What is the formula for the Axis of Symmetry?

• (x + b/2)²

• x = (b/2)²

• x = -b/2a

• x = b/a

A plot of land is rectangular and has an area of x²-5x-24 m². The length is x+3 m. Find the width of the plot.

• x + 3

• -29

• x - 8

• x - 5x