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Envision Math 2.0: Grade 8, Volume 1

EM

Envision Math 2.0: Grade 8, Volume 1 View details

Review

Exercise 1 Page 152

The y-coordinate of the point where the line crosses the y-axis is the y-intercept.

5

Practice makes perfect

We are given a graph which represents the cost of getting a car wash and using a vacuum for x minutes.

We are asked to find the y-intercept.

Y-intercept
The y-coordinate of the point where the line crosses the y-axis is the y-intercept.

Let's find the point on the graph where the line crosses the y-axis.

We can see that the graph crosses the y-axis at the point (0, 5). Therefore, the y-intercept is 5.

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