body{margin:0;} noscript{z-index: 10000; position: fixed; display: block; height: 100%; width: 100%; background: #fff;} noscript .fa{font-size: 40px; display:block; color: #daa520;} noscript div{margin-top: 6%; padding-left: 20px; padding-right: 20px; text-align: center;} ! You must have JavaScript enabled to use this site.

Envision Math 2.0: Grade 8, Volume 1

EM

Envision Math 2.0: Grade 8, Volume 1 View details

Review

Exercise 2 Page 152

The y-intercept is the cost y when the number of minutes of using the vacuum x is equal to 0.

The y-intercept represents the cost of getting a car wash.

Practice makes perfect

Previously, we found that the y-intercept of the graph is 5. The graph represents the cost y of getting a car wash and using the vacuum for x minutes.

The y-intercept is the cost of getting a car wash and using the vacuum for x=0 minutes. Since using a vacuum for 0 minutes is the same as not using the vacuum, the y-intercept represents the cost of only getting a car wash.

Subchapter links

Topic Essential Questions p.147

Vocabulary Review p.147

Use Vocabulary in Writing p.147

1 Combine Like Terms to Solve Equations p.148

2 Solve Equations with Variables on Both Sides p.148

3 Solve Multistep Equations p.149

4 Equations with No Solutions or Infinitely Many Solutions p.149

5 Compare Proportional Relationships p.150

6 Connect Proportional Relationships and Slope p.151

7 Analyze Linear Equations: y=mx p.151

8 Understand the y-Intercept of a Line p.152

9 Analyze Linear Equations: y=mx+b p.152