Big Ideas Math Integrated I, 2016
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Big Ideas Math Integrated I, 2016 View details
3. Solving Inequalities Using Multiplication or Division
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Exercise 30 Page 72

Isolate x in each inequality first.

a→ C
b→ A
c→ B
d→ D

Practice makes perfect

Before we can match the inequalities with their corresponding graphs, we should solve them for x. It is not easy to visualize the graphs with the fractions.

Option Inequality Isolated x
a x/m<-1 x<- m
b x/m>1 x>m
c x/m<1 x
d -x/m<1 x>- m

Now we can easily match the graphs with the inequalities.

Graph A

Graph A shows a positive value for m with the shading to the right. This would correspond with the inequality x>m, option b.

Graph B

Graph B shows a positive value for m with the shading to the left. This would correspond with the inequality x

Graph C

Graph C shows a negative value for m with the shading to the left. This would correspond with the inequality x<- m, option a.

Graph D

Graph D shows a negative value for m with the shading to the right. This would correspond with the inequality x>- m, option d.