### Home > A2C > Chapter 7 > Lesson 7.1.2 > Problem 7-21

7-21.

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

For example, the *y*-intercept will be (0, ?, 0).

To find the *y*-intercept, let *x* = 0 and *z* = 0

Repeat the process to find the *z*-intercept. (0, 0, ?).

(0, 10, 0) and (0, 0, 4)

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 the link at right for the full version of the eTool: A2C 7-21 HW eTool