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WARM UP

Find the values of a and b if and = 64

SOLVE

5t – 8 = 9t - 10

GOAL:Get variables on the same side of the equation.

VERIFY THE SOLUTION

5t – 8 = 9t – 10 where t =

TRANSPORTATIONMary and Jess are sisters. They left school at 3:00pm

and biked home along the same path. Mary biked at a speed of 12 mi/h. Jess biked at 9 mi/h. Mary got home 15 min before Jess. How long did it take Mary to get home?

SPECIAL TYPES OF EQUATIONS

An equation has no solution if no value makes the equation true.

Solve

SPECIAL TYPES OF EQUATIONS

An equation that is true for every value of the variable is an identity.

Solve

MENTAL MATH

Without writing the steps of a solution, tell whether the equation has one

solution, no solution, or is an identity.

a) 9 + 5a = 5a – 1 b) 5a + 9 = 2a

c) 9 + 5a = 2a + 9 d) 9 + 5a = 5a + 9

HOMEWORK

Pg 166-168 #8-13, 17, 20, 21, 25–27, 34, 33, 43