Equations and Inequalities

Determine if the value makes the equation true.

6x = 108, if x = 18

• True

• False

x + 54 = 76

2.1x = 23.1

-45 = 12 + x

Which equation represents the linear relationship between the x-values and the y-values in the table?

• y = 2x + 12

• y = 5x - 6

• y = 6x - 5

• y = -x - 11

Is this an equation or an inequality?

8 = 2x

• Equation

• Inequality

Which equation best represents the linar equation?

The cost to rent a rug cleaner for a day is $25 plus $15 per hour.

Write an inequality that can be used to show how many hours (x) you can rent the rug cleaner for so that the charges will be less than $130.

Mathematical Equivalence

OFF

​ ​ (a)   function a relationship with a constant rate of change represented by a graph that forms a straight line

• Linear equation in two variables

• Linear inequality in two variables

HINT: y = mx + b

m is mountain slope... rise/run

change in y/ change in x

b is beginning... y intercept of the line.

• 
• 
• 
•