Answer: y=5x-35
Explanation:
The formula I believe you are looking for would be y=mx+b. M is your slop and B is your y-intercept. Since the slope is already given, you would fill in the rest of the formula with that and the (x,y) you were provided, and it should look like this:
5=5(8)+b.
Then you solve that for b as follows:
5=5(8)+b
5=40+b
-35=b
Therefore the equation would be y=5x-35