Use the graph shown at the right.

8. What is the slope of the line?

8.

9. Find the x- and y-intercepts of the line.

9.

10. Write a direct variation equation

relating x and y.

Slope of the line is .

x-intercept is 0 and the y-intercept is 0.

direct variation equation  relating x and y is .

Solution:

Let the points on the line are (–3, 2) and (3, –2).

Slope of the line:

Slope of the line is .

The x-intercept is, where a line crosses at x-axis.

The y-intercept is, where a line crosses at y-axis.

Here, x-intercept is 0 and the y-intercept is 0.

Direct variation form:

y = mx

Hence slope of the line is .

x-intercept is 0 and the y-intercept is 0.

direct variation equation  relating x and y is .