Explain how you decide which part of a problem will be represented by the variable x, and which part will be represented by the variable y in the graph of the situation.
well i don't know if this will help but slope intercept form
y=mx+b
M-slope B-Y intercept and (x,y)- would be any point on the graph and if you were to plug those points in for x and y the equation would solve if done properly
