Answer:
1 is 1/2
Step-by-step explanation:
rise is over run then you simplify.
first you have to find the interception point. the place when the x and y meet it can be any point as long as it's in a corner of a square.
then you do rise over run.
if the live is going up then it's going to be a rise and a run. depending on left and right can determine the positive or negitve.
up is positive, down is negitve, right is positive, and left is negitve.
