Will give 50 points if helped fast.

m = -1/2

Step-by-step explanation:

Use two points on the line to find the slope:

(0, -5) and (3, 1)

Find the slope:

m = (1 - (-5))/3 = 6/3 = 2

The perpendicular slope is negative-reciprocal to the given:

m = - 1/2

Now you can add your line

If you need an equation, it would be y=2x+8, y would be how long it grew, x being weeks.if you need how long he was asleep, it would be 4 weeks if he started with no beard, the equation would be x=8÷2if he did have a beard before hand, the equation would be 2w+x=8