EXAM REVIEW

Systems

100

Solve.

y=-2x-5

y=2/3x+3

(-3,1)

200

Solve.

y=5x+20

-2x+2y=8

(-4,0)

300

Solve.

-5x-6y=-15

-2x-6y=-24

(-3,5)

400

Solve.

-5x-8y=-25

3x+4y=11

(-3,5)

500

Solve.

-80x-64y=16

-60x-48y=12

infinite solutions

Quadratics

100

Identify vertex.

f(x)=3(x+4)²-8

(-4,-8)

200

Identify axis of symmetry.

f(x)=-4(x-4)²+1

x=4 (must have x=)

300

Solve.

x²+5x-24=0

x=-8,3

400

Solve

3x²+5x+6=8

x=1/3, -2

500

Solve.

3x²=-35-22x

x=-7/3,-5

Transformations/Eqns

100

Identify all transformations to y=x².

f(x)= (x-1)²+5

Right 1, up 5

200

Identify all transformations to y=x².

y=3(x+2)²-8

vertical stretch by 3

left 2

down 8

300

Solve: 7(3-3x)=84

x=-3

400

Solve: 3(-5k-2)=-27-8k

k=3

500

-2(2m+4)=-3m-8(1+7m)

m=0

Polynomials

100

Name by degree and number of terms.

f(x)=4x

linear monomial

200

Simplify.

(4x³-6x⁴)+(x⁴+5x³)

-5x⁴+9x³

300

Simplify.

(4x³-3x)-(8x³+7x)

-4x³-10x

400

Write a polynomial with these zeros.

x = -4,0,2

f(x)=x³+2x²-8x

500

Write a polynomial with these zeros.

x = -4 mult 2, -3

f(x)=x³+11x²+40x+48