### Home > CCA2 > Chapter 6 > Lesson 6.1.2 > Problem 6-21

6-21.

For each of the following equations, find every point where its *three-dimensional* graph intersects one of the coordinate axes. That is, find the *x*-, *y*- and *z-intercepts*. Express your answer in

To find the intercept of a given axis, set all other variables to zero.

For example, the*y*-intercept will be.

To find the*y*-intercept, letand.Repeat the process to find the

*z*-intercept.. and See part (a).

See part (a).

Note: You will have two*x*-intercepts and two*z*-intercepts. Why?See part (a).

Use the eTool below to test your solutions to parts (a), (b), and (c) above.

Click on the link at right for the full eTool version:*CCA2 6-21 HW eTool*