Introduction to Quadratics

A parabola is...

• the U-shaped curve created when a quadratic equation is graphed

• the highest point on a graph of a quadratic equation

• the vertical line that divides the graph of a quadratic equation into two equal parts

• an illness kind of like ebola

Tags

CCSS.HSF-IF.C.7A

What is standard form of a quadratic equation?

• $y=ax^2+bx+c$

• $x=\frac{-b}{2a}$

• $Ax+By=C$

• $y=a\left(x-h\right)^2+k$

What is the value of a?
y= -3x² + 6x - 6

• -3
• 6
• -6
• 3

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

What is the value of b?
y= 4x² -x +6

• 4
• 1
• -1
• 6

Tags

CCSS.6.EE.C.9

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

• -3
• 6
• -6
• 3

Tags

CCSS.HSF-IF.C.7A

Give the a-, b-, and c-values for the following quadratic equation.  $y=x^2+9x+16$  

•  $a=1,\ b=9,\ c=16$  

•  $a=1,\ b=16,\ c=9$  

•  $a=0,\ b=9,\ c=16$  

•  $a=-1,\ b=-9,\ c=16$  

Tags

CCSS.HSA.REI.B.4

CCSS.HSA.SSE.A.1

If 'a' is __________ , then the parabola opens __________ .

• positive; up

• positive; down

• negative; up

• negative; right

Tags

CCSS.HSF-IF.C.7A

If 'a' is __________ , then the parabola opens __________ .

• negative; down

• negative; up

• positive; down

• positive; left

Tags

CCSS.HSF-IF.C.7A

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

• up
• down

Tags

CCSS.HSF-IF.C.7A

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

• up
• down

Tags

CCSS.HSF-IF.C.7A