Equations and Inequalities review

Vocab

100

Represents an unknown value

Variable

200

a statement that the values of two mathematical expressions are equal, indicated by the sign =.

equation

300

Used to keep equations balanced, can be used to solve equations. 

Properties of equality. 

400

Causes a change in the given situation

Independent Variable

500

The opposite operation used to solve equations

Inverse relationship

Inequalities

100

John is taller than 50 inches.

j >50

200

The car holds at most 8 people

c ≤ 8

300

Tonya does not have $356 

x ≠ 356

400

The height limit for the roller coaster is at least 48 inches tall. 

h  ≥ 48

500

Name the next three possible whole number solutions to the inequality

x ≥ 981

981, 982, 983

Equations

100

x + 2 = 8

x = 6

200

x/7 = 8

x=56

300

5.5x= 264

x=48

400

274.2 = x ÷ 4

x = 1096.8 

500

14.57 = x + 6 + 0.68

x = 7.89 

Independent & Dependent Variables

100

Identify the dependent variable. Every week, Mandy is paid d dollars for working h hours. 

d dollars 

200

Identify the independent variable, The number of players, p, and the number of teams, t, for a scavenger hunt

p players

300

if m represents the number of minutes of exercise, and c represents the number of calories burned during exercise, which of the variables m and c is dependent?

c calories

400

What is the relationship between t and c in this situation: A server earns t dollars in tips when she serves c customers?

Independent variable: c

Dependent variable: t

500

he dependent variable, g, represents the gas mileage for a vehicle. Select all the variables that can represent an independent variable in this situation. 

a.The color of the interior 

b. The age of the vehicle 

c.The horsepower of the engine 

d. The weight of the vehicle

e. The dealership where the vehicle was purchased

b. The age of the vehicle 

c.The horsepower of the engine 

d. The weight of the vehicle