Answer:
y = -5x + 21
Step-by-step explanation:
The perpendicular slope is opposite of the inverse. The inverse of 1/5 is 5/1, and the opposite of that is -5/1.
So m = -5.
Then use point-slope form:
y + 4 = -5 (x - 5)
If you wish, convert to slope-intercept form:
y + 4 = -5x + 25
y = -5x + 21
