Math 1

Inequalities

100

3x - 4 < 2

x < 2

200

-3n - 4 > 4n + 10

n < -2

300

5 - 4n < 8 - 5n

n < 3

400

9(p + 2) ≤ 3(3p - 5)

No Solution 

500

4k - 6 < 3k + k - 1

All Real Numbers 

Find the Variable

100

-5 = 6d - 7d + 4

d = 9

200

2k + 36 = 6k - 12

k = 12

300

8k - 15 = 4k + 13

k = 7

400

-3(2h - 4) = 20 - 4h 

h = -4

500

2(5 - 3r) = -4r - 16

r = 13

Evaluate the Functions

100

f(x) = 4x  ; find f(-15)

f(-15) = -60

200

f(x) = 7x - 5 ; x = 6

f(6) = 37

300

f(x) = 9x + 3 ; x = -10

f(-10) = -87

400

f(x) = 3(-2x+7) ; find f(-7)

f(-7) = 63

500

f(x) = -x - 11; find 3f(5) x f(2)

624

Solve by Elimination

100

-4x - 2y = -12

4x + 8y = -24

x = 6 and y = -6

200

4x + 8y = 20

-4x + 2y = -30

x = 7 and y = -1

300

7x + 2y = 24

8x + 2y = 30

x = 6 and y = -9

400

5x + y = 9

10x - 7y = -18

x = 1 and y = 4

500

-3x + 7y = -16

-9x + 5y =16

x = -4 and y = -4

Finding Slopes

100

(5,5) , (4,2)

3

200

(2,2) , (-5,4)

-2/7

300

(-10,6) , (-5,8)

2/5

400

(7,-3) , (11,-4)

-1/4

500

(13,0) , (-2,-12)

4/5