Chapter 6 Review

Translating Words into Equations

100

The sum of an number n and 7 is 15

n + 7 = 15

200

A number y decreased by 4 is 3

y - 4 = 3

300

The Quotient of a number g and 5 is 30

q / 4 = 12

400

2 1/2 is the same number as the sum of a number w and 1/2

2 1/2 = w + 1/2

500

The sum of a number z and 10 all divided by 2 is 30

z + 10

_____      = 30

   2

Solution or Not?

100

p + 10 = 38 ; p = 18

18 + 10 = 38

28 = 38

NO

200

35 = 7n ; n = 5

35 = 7(5)

35=35

Yes

300

y = 5x + 8 ; (2, 18)

18 = 5(2) + 8

18 = 10 + 8

18 = 18

Yes

400

y = 20 + 2x ;  (15, 30)

30 = 20 + 2(15)

30 = 20 + 30

30 = 50

No

500

y = 70x ; (0, 70)

70 = 70(0)

70 = 0

No

Solving Equations

100

26 = 11 + x

15 = x

200

p + 10 = 38

p = 28

300

2x = 20

x = 10

400

t / 5 = 22

t = 110

500

y / 10 = 26

y = 260

Dependent/Independent

100

e = 20k

Independent k

Dependent e

200

c = 10p

independent p

dependent c

300

e = 37z

Independent z

Dependent e