Y = mx +b whre m is the slope and b is the y-intercept.
We have the slope 3/4 so put that instead of m
y = 3/4x + b
Now to find the y-intercept (b), plug the ordered pair in and solve for b.
-4 = 3/4 * 5 + b
-4 = 15/4 + b
-31/4 + b
So y = 3/4x - 31/4
They are both divisible by 3 so we divide both by 3 and get
3(5+7)
Answer:
11
Step-by-step explanation:
First you need to get the equation so x is the only variable on one side.
x = -5.35
Set this up as ratio with feet on top and minutes on the bottom:
. Cross multiply to get 213x = 112 and solve for x to get x = .52 feet. This means that after she has been descending for 8 minutes she is a half a foot from the top.
