Quadraticz (Ms. Ramirez)

Finding the X-Intercepts

100

y=____when we want to find the x-intercepts.

0

200

The x-intercepts of (x-1)(x-2)=y are ______.

(1,0) and (2,0)

300

Our x-intercepts should be _____.

coordinates; points; (a number, 0)

400

The x-intercepts for (2x+8)(-3x+12)=y are_____.

(-4,0) and (4,0)

500

The x-intercepts for x²+2x-24 are ______.

(4,0) and (-6,0).

Finding the Y-Intercept

100

x=____ when we want to find the y-intercept.

x=0

200

Our y-intercept should be a ______.

point; coordinate; (0, a number)

300

The y-intercept for x²=y is ______.

(0,0)

400

The y-intercept for x²+2x-24=y is _______.

(0,-24)

500

The y-intercept for 8(x+1)²+2=y is ______.

(0,10)

Quadratic Questions

100

For x²+2x=y, will the parabola be open upwards or downwards?

Upwards

200

For y=-x²+2x: a=____, b=_____, c=_____

-1; 4; 0

300

y=a(x-h)²+k is the ____ form of a quadractic.

vertex

400

y=ax²+bx+c is the _____ form of a quadratic.

standard

500

The name of the graph of a quadratic equation is a _____.

parabola

Finding the LOS

100

When finding the LOS, we solve for x=______

a number.

200

The line of symmetry for x²+2x+1=y is _____.

x=-2

300

The LOS for 3x²-12x+246=y is ______.

x=2

400

The two ways to find LOS are LOS = ______ or 

LOS = ______.

-(b)/2a; (x₁+x₂)/2

500

If the x-intercepts of a graph are (-16,0) and (-8,0), the LOS is _______.

x=-12

Finding the Vertex

100

The vertex should always be a ______.

point: (x,y)

200

The vertex for x²-4x+4 is _______.

(2,0)

300

The vertex of y=8(x+6)²-4 is _____.

(-6,-4)

400

The vertex for -x²+3x+2 is _______.

(1.5,4.25)

500

We use ______ value from the _____ and plug it into our _______ to find the _____ value of the vertex.

x; LOS; original (and/or factored) equation