Mary says she can find the x‑intercept of the equation −4x + 5y = 16 by substituting 0 for x, while Michelle says she needs to substitute 0 for y. Homework Help ✎
Who, if anyone, is correct and why?
Use the correct approach to determine the x‑intercept.
One way to view this is graphically: the x-intercept lies anywhere along 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.