Ms Juan 6th Period Team 5

Linear equations

100

solve FOR  Y-INTERCEPT

 -5x+4y=-16

 -5x+4y=-16

STEP 1: -5X=-6 - 4Y

STEP 2: x=6/5+4/5 Y

ANSWER : Y-INTERCEPT: (0,-3/2

200

1+7=4+X

SOLVE FOR X 

1+7=4+X

STEP 1 :8=4+X

STEP 2:-X=4 - 8

STEP 3:-X=-4

ANSWER: X=4

300

SOLVE FOR X: 20X+30Y=180

 20X+30Y=180

STEP 1:20X=180 - 30Y

ANSWER: X=9 - 3/2Y

400

SOLVE FOR X: 4(4X)+2(X)=72

4(4X)+2(X)=72

STEP 1: 16X+2X=72

STEP 2:18X=72

ANSWER: X=4

Inequalities

100

Solve for x 

x+2>12

x>10

200

12<x+5

7<x

300

Solve for x x+3<7

x<4

400

x-12>8

x>20

500

solve for m

m+19>56

m>37

exponential functions

100

2^x=32,

what is x?

x=5

200

5^x=1/125,

what is x?

x=-3

300

(1/3)^2x=243,

what is x?

x=-5/2

400

500=1000e^-.75x

what is x?

x=0.9242

500

56=14(1+e^.195x),

what is x?

x=5.6339