Point slope eqaution is
y-y1=m(x-x1)---------equation1
find m slope=y2-y1/x2-x1
m=-3+1/3+4=-2/7
so put those all values in eqaution 1
<span>(x1, y1) as (-4, -1).</span>
y+1= - 2/7(x+4)
The height of the umbrella would be 8 feet. Going by the 45, 45, 90° rule, the legs would be equal sizes which would make the height 8 feet.
