Answer:
Graph the line using the slop and y-intercept, or two points.
Slope: 1
y-intercept: -2
x: 0, 0
y: -2, -2
(Sorry is this isn't the answer you are looking for)
89 squared minus 39 squared and the answer you get is what you put into the radical
Sorry i have learnt it but i can remember how to do it
C because PEMDAS
(Please excuse my dear aunt sally)