Gabby and Eysis Midterm Review

systems of equations

100

3x+4(2x-2)=-8

x=0

200

3x+y=12

x=2

300

4x+y=12

y=3

400

4x+2y=2

x=0

500

5x-8y=1

x=5

linear equations

100

what is the general equation of a linear function?

y=mx+b

200

if the slopes are same, is the line parallel or perpendicular

parallel

300

f(x)=2x+6

(0,6)

400

x-2y=-8

(-8,0)

500

what does a horizontal line mean?

zero slope

quadratics and parent functions

100

does a positive parabola open up or down?

up

200

what is the vertex?

(h,k)

300

y=f(x)=a (x-h)²+k

f(x)=2(x+1)²-3

400

y=x²+4x+1

-3

500

y=x²+2x+1

1

factoring

100

when would you factor by grouping?

when you have 4 terms

200

2x+3x+3x+5

15x²+25x

300

15k³-5k2+24k-8

(3k-1)(5k²+8)

400

25n⁴-50n³+35n

5

500

18y²-4x⁵

2