Math 7 Ch. 4 Review

Solving One Step Equations

100

x + 3 = 10

x = 7

200

5 = n + 9 

n = -4

300

-6.4 = x + 4.3

x = 10.7

400

5n = 25

n = 5

500

1/4t = 16

t = 64

Solving Two Step Equations

100

3k - 2 = 10

k = 4

200

5p + 2 = -10

p = -1.6

300

6 + 2n = 3

n = -1.5

400

3(k-5) = -16

k = -0.33

500

4y - 16.3 - 53.1

y = 17.35

Writing/Graphing Inequalities

100

Is this true?

5n > 9 

If n = 1

No, false. 

200

Is this true?

a + 1 ≥ -4

If a = -7

No, false

300

Write the inequality: 

A number x is greater than 25.8 

x > 25.8

400

Graph the inequality: 

x ≥ -11

Closed circle, pointing right

500

Graph the inequality: 

x ≤ -3.2

Closed circle, pointing left

Solving One Step Inequalities

100

x + 5 ≥ 20

x = 15

200

3 + x ≤ - 2

x = -5

300

4x < 24

x = 6

400

x/4 > -4

x = -16

500

4.2x ≥ -12.6

x = -3

Solving Two Step Inequalities

100

8x - 11 < 13

x = 3

200

3x - 5 ≥ 16

x = 7

300

4.6 > 1.2 + 1.7x

x = 2

400

8(x-4) ≥ 40

x = 9

500

-6.8 ≥  0.8(x + 1) 

x = 7.5