Solving Inequalities With Multiplication

12
Solving Inequalities Utilizing multiplication and division

description

Lesson for 8th grade math

Transcript of Solving Inequalities With Multiplication

Solving Inequalities by Multiplication and Division

Solving Inequalities Utilizing multiplication and divisionWarm upRecallWhat does the answer to an equation look like (supposing its linear)?

What does the answer to an inequality look like? Whats the difference?

Example 1 Together!Example 2 Individual!Example 3 Together!Multiplying/Dividing by a negative numberExample 4 Together!Example 5 Together!Example 6 Together! Justin Bieber is traveling on an interstate with a speed limit of 70 miles an hour. He is really against speeding - how far can he travel in 1.5 hours without breaking the law? (Hint: speed is calculated by dividing ______ by _______)

Example 7 Groups!Lady Gaga wants to plant a circular garden in her backyard that will be enclosed by a short fence. She can use up to 38 feet of fence, what radius can she use for the garden? (Hint: the formula for the circumference of a circle is ________ )

Example 8 Groups!Come up with a word problem of your own. (Hint: use words like at most, at least, less than, or more than.)