### Home > CCA > Chapter 8 > Lesson 8.1.4 > Problem 8-42

8-42.

Mary says that you can find an

*x-*intercept by substituting 0 for*x*, while Michelle says that you need to substitute 0 for*y*. Homework Help ✎Who, if anyone, is correct and why?

Use the correct approach to find the

*x-*intercept of −4*x*+ 5*y*= 16.

One way to view this is graphically: the *x*-intercept lies any wherealong the *x*-axis.

Michelle is correct. The *x*-intercept always has a *y*-coordinate of 0 because it lies on the *x*-axis.

Substitute 0 for *y* and then solve for *x*.