3.) Which is greater 4 • 5 - 3 or 4(5 - 3) Bellwork 1.) If a = 3, evaluate 2a -5 2.) If t = 7, evaluate t2 + 26 3.) Which is greater 4 • 5 - 3 or 4(5 - 3) 4.) Is 23 less than 3(7 - 4)2

1.) If a = 3, evaluate 2a -5 1 2.) If t = 7, evaluate t2 + 26 75 Bellwork 1.) If a = 3, evaluate 2a -5 1 2.) If t = 7, evaluate t2 + 26 75

3.) Which is greater 4 • 5 - 3 or 4(5 - 3) 17 > 8 4 • 5 - 3 Bellwork 3.) Which is greater 4 • 5 - 3 or 4(5 - 3) 17 > 8 4 • 5 - 3 4.) Is 23 less than 3(7 - 4)2 23 < 27 yes

To be able to Check solutions of equations and inequalities. Today’s Objective To be able to Check solutions of equations and inequalities.

Equations and Inequalities Equation means equal to (=) Inequality means Not Equal To ( <, >)

Guess and Check Plug-in the numbers from 1 - 5 to find the solution to the following equation: 4x - 2 = 10

Guess and Check x = 1 4x - 2 = 10 4(1) - 2 = 10 4 - 2 = 10 2 = 10

Guess and Check x = 2 4x - 2 = 10 4(2) - 2 = 10 8 - 2 = 10 6 = 10

Guess and Check x = 3 4x - 2 = 10 4(3) - 2 = 10 12 - 2 = 10 10 = 10

What number plus 2 equals 6? Mental Math 1.) x + 2 = 6 What number plus 2 equals 6? 4 2.) x - 3 = 4 What number minus 3 equals 4? 7

2 times what number equals 10? Mental Math 3.) 2x = 10 2 times what number equals 10? 5 4.) x/3 = 1 What number divided by 3 equals 1? 3

Inequality Symbols > Greater Than < Less Than > Greater Than or Equal to < Less Than or Equal to = Not Equal to

Decide if 4 is a solves the following inequalities. 1.) 2x - 1 < 8 2.) x + 4 > 9 3.) x - 3 < 1

1.) 2x - 1 < 8, when x = 4 1.) 2x - 1 < 8 2(4) - 1 < 8 8 - 1 < 8 7 < 8 True

2.) x + 4 > 9 when x = 4 1.) x + 4 > 9 4 + 4 > 9 8 > 9 8 > 9 False

3.) x - 3 < 1 when x = 4 1.) x - 3 < 1 4 - 3 < 1 1 < 1 True

Classwork Do Worksheet 1.5 (1-24) Homework Page 30 (9-32all) and (34)