Y=mx+b
plug in the point
3=-1*-4+b
3=4+b
b=-1
y=-1x-1
Step-by-step explanation:
Given that,
The length of a ladder, H = 20 feet
The height of the wall, h = 15 ft
We know that,

h is perpendicular and H is hypotenuse
So,

Now using Pythagoras theoerm,

Hence, the angle made by the ladder and the ground is 48.59° and the ladder is 13.2 feet from the wall on the ground.
Answer:

Step-by-step explanation:

Let's convert the mixed number to an important fraction.
-1 1/6 = -7/6
Now multiply:

-Chetan K