Well, a y-intercept is a the point on a graph where the x value equals 0, because the point sits exactly on the y-axis. In this case, the y-intercept would be (0, -9).
46
When it says f(4) that means x=4
So you then just fill in all the x’s with 4’s and solve as normal
Answer: Since you already know that the ordered pair is in the format of (x, y), then you can label one of the ordered pairs as 1 and kind of distribute it to get 1(x, y) = (x-sub1, y-sub1). Then just use the slope formula (y2-y1)/(x2-x1).
Step-by-step explanation:
It would be around 138 minutes which is 2 hrs and 18 min so it would be C).
It depends how you name the sides of triangle.
Look at picture at the result.

PS. Sorry for my terrible drawing but I did it as fast as possible :)