1st question (the image):
y= -5/4x + 3/2
how to solve:
y=mx+b
b: where the line meets the y axis
3/2 is 1.5 which matches up perfectly with the graph
m: the direction of the slope
If you look where the line matches with a point and you go down -5 and go right 4 it matches up and thats why m = -5/4
2nd question (the text):
C) y = 3/4 x + 1/4
how to solve
draw a graph (up above)
y:mx+b
to find m: rise/run
find the first point (1,1) you have to go 3 points up and 4 points right to get to the next point
(5,4) and thats why m=3/4
b: where the link hits the y axis compare the answers and the graph and find the most resonable one... which is 1/4