Quadratics

Find the y-intercept

100

y=-3x²+6x-2

y=-2

200

y=x²-2x+1

y=1

300

y=-x²+4x-3

y=-3

400

The y-intercept of y=2(x−2)²+2

(0,10)

500

The y-intercept of y=x²-7x+12 is?

(0,12)

Find the Vertex

100

y=(x-2)²+3

(2,3)

200

y=-2(x+1)²+5

(-1,5)

300

y=(x-3)²-4

(3,-4)

400

y=4(x+2)²+1

(-2,1)

500

The Vertex of y=3(x+4)²+1 is?

answer 1: -4

answer 2: 1

Find the roots

100

y=x²+4x+4

x=-2

200

y=3x²+6x+3

x=-1

300

y=2x²-7x+3

answer 1: x=3

answer 2: x=1/2

400

y=(x+3)(x-5)

answer 1: (-3,0)

answer 2: (5,0)

500

y=x²-5x+6

answer 1: x=2

answer 2: x=3

Find the y-intercept 2

100

y=x²+4x+3

(0,3)

200

y=-2x²+5x-1

(0,-1)

300

y=3x²-2x+7

(0,7)

400

y=x²-6x+9

(0,9)

500

y=-x²+2x-4

(0,-4)

Random

100

find the y-intercept y=-2x²+8x-6

y=-6

200

what do you do to the b value to correctly complete the square?

divide by 2 and square the result.

300

Solve 2x²=-10x-7

A.−10±112                   B.  −5±392

C.  −5±112                  D. −5±114

Answer is C

400

Solve 4x²=6-5x

answer 1: 0.75

answer 2: -2

500

What is this quadratic function in standard form

Y=-2(x+2)(x-1)

y=-2x²-2x+4