### Home > CC3 > Chapter 5 > Lesson 5.1.2 > Problem 5-21

Jamila wants to play a game called “Guess My Line.” She gives you the following hint: “Two points on my line are

What is the growth rate of her line? A graph of the line may help.

Growth rate: when

grows by, grows by. What is the

-intercept of her line?The

-intercept is where the line crosses the-axis.One strategy is to use the slope triangle to continue the line and then simply read the

-intercept (where the line crosses the-axis) right off the graph.-intercept. What is the equation of her line?

Use the rate of growth and the

-intercept to write an equation for the line.the rate of growththe-coordinate in the-intercept

Use the eTool below to complete the graph and help solve each part.

Click on the link at right for the full eTool version: *5-21 HW eTool*