Chapter 6 Test Review

Solve Equations

100

x - 3 = 19

x - 3 = 19

   +3    +3

x = 22

100

3 + x = 40

3 + x = 40

-3         -3

x = 37

100

5y = 60

5y = 60

/5     /5 

y = 12

100

49 = m/7

49= m/7

x 7    x7

m = 343

100

30x = 210

30x = 210

/30      /30

x = 7

Random Math

100

You purchase an item for x dollars and another item for $40.  The total bill is $70.  Write an equation and solve for x. 

Equation:  x + 40 = 70

Solve:           - 40    -40

x = 30

100

There are 16 teams in a basketball tournament.  After 2 rounds, 12 teams are eliminated.  Write and solve an ADDITION EQUATION to find the number of teams remaining after two rounds.  

t + 12 = 16

   -12      -12

t = 4 

4 teams remaining

100

Write the word sentence as an equation:

The sum of y and 10 is the same as 20

y + 10 = 20

100

Write the word sentence as an equation:

The product of 5 and x is 30 

5x = 30

100

The difference of x and 3 is also 15

x - 3 = 15

Write Equations from Word Problems

100

The difference of a number y and 17 is 42.  

y - 17 = 42

100

Write an equation then solve: 

8 is the quotient of a number x and 3.  

8 = x ÷ 3

x 3      x 3

x = 24

100

Write an equation then solve:

9 is 3 less than a number y.  

9 = y - 3 

+3      +3

y = 12

100

Write an equation then solve:

The product of 4 and x is 12. 

4x = 12 

/4     /4

x = 3

100

Write an equation and then solve: 

28 is the same as 12 more than x.

28 = x + 12 

-12     -12

x = 16

More Random Math

100

Tell whether the ordered pair is a solution: 

y = 5x;  (6, 14) 

14 = 30

NO

100

Identify the Dependent and Independent Variables in the following problem:

The equation h = 60 - 4m represents the height h of the water in a tank m minutes after it starts to drain. 

h = dependent variable

m = independent variable

100

 Which equations DO NOT have 6 as a solution? 

a.   x + 3 = 6

b.   x + 5 = 11

c.   2x = 12

d.  x - 10 = 40

e.  33 = x/3

a, d and e

100

Tell whether the ordered pair is a solution:

y = x/5 ;(20, 5)

5 = 4

NO

100

Tell whether the ordered pair is a solution:

y = 40x + 3  ; (3, 122)

122 = 123

NO

Graph Equations

100

Write the first 3 points on the graph of the equation:  

y = 2x 

(0, 0), (1, 2), (2,4)

100

Write the first 3 points on the graph of the equation: 

y = 2x + 1

(0,1), (1,3), (2,5)

100

Write the first 3 points on the graph of the equation: 

y = x + 3

(0, 3), (1, 4), (2,5)

100

 Write the first 3 points on the graph of the equation: 

y = 4x + 1

(0,1), (1,5), (2,9)

100

Write the first 3 points on the graph of the equation: 

y = x

(0,0), (1,1), (2,2)