How do you find the x and y intercept given x-y=4?

1 Answer
Mar 9, 2018

x-intercept at x=4
y-intercept at y=-4

Explanation:

The x-intercept (point where a graph of the function crosses the X-axis) is the value of x when y=0 (since for all points on the X-axis, y=0)
x-y=4 with y=0rarr x-0=4 rarr x=4

Similarly, the y-intercept it the value of y when x=0
x-y=4 with x=0rarr 0-y=4 rarr y=-4

Note: some instructors prefer to have the x and y intercepts written as coordinate pairs; in this case:
x-intercept is at (4,0)
and
y-intercept is at (0,-4)