I am assuming it wants it “y=mx+b” form, you would start with the formula “y-y1=m(x-x1)”
You get: y-17=-4/3(x-(-9))
Simplify: y-17=-4/3(x+9)
Distribute: y-17=-4x/3-(36/3)
Simplify Fraction: y-17=-4x/3-12
Add “17”: y=-4x/3 +5
Answer:
to help, i will demonstrate the first problem. This is a right triangle. We know this because it is a 45-45-90 triangle.
Because of this we know that the sides are 2 and 2 (they must be equal).
Now we need the hypotenuse- the side across from the right angle (in other words, the diagonal line).
To do this we take 2 times the square root of two. This makes it 2.82.
9 watches should be served.
8 plus 3 is 11, 15 minus 11 is 4
So you know that the total width of the posters is 4 + 4 + 4 so 12 inches.
you also know that the ratio of the total poster width to the width of the advertisement is 4:5
so to find the width of the whole board you do
12 / 4 = 3
3 x 5 = 15 inches
then you know that
4t = 15-12
4t = 3
t = 3/4 inches