Quadratic Equations in Standard Form

Without using a graphing calculator:  What direction is the following equation opening?
y=-3x²-7x+8

• Up
• Down

Tags

CCSS.HSF-IF.C.7A

What piece of information does c identify in the following equation?
y=ax²+bx+c

• Zeroes
• Axis of Symmetry
• Direction
• y-intercept

Tags

CCSS.HSF-IF.C.7A

What is the axis of symmetry for the following equation?
y=-x²+6x+9

• x=3
• x=2
• x=-3
• x=-2

What is the axis of symmetry for the following function?
y=-x²-8x+9

• x=2
• x=-4
• x=4
• x=-8

What equation matches the following graph?

• y=-x²-8x+6
• y=x²-8x+6
• y=x²+8x-6
• y=x²-8x+11

Tags

CCSS.HSF-IF.C.7A

What equation matches the following graph?

• y=-2x²-4x-3
• y=2x²-4x-3
• y=-2x²-4x+3
• y=2x²-4x-6

Tags

CCSS.HSF-IF.C.7A

Find the y-intercept of
f(x) = 2x²-2x + 1

• 2
• -2
• 1
• -1

Tags

CCSS.HSF-IF.C.7A

Joe Mauer hits a fly ball.  You can track the height of the ball using the equation:   h(t) = -16t² + 140t + 2  
What was the starting
                        height of the ball?                                                                                      

• -16 feet
• 140 feet
• 2 feet
• 0 feet

What is the domain of y=-3x²+6x-1?

• x > 0
• x > -1
• All real numbers
• x < -3

What is the axis of symmetry?
y = 3x² - 6x + 4

• x=1
• x=-6
• x=2
• x=-1