Slope: you can do rise/run by making a small triangle or you can use the slope formula.
Slope formula: pick any two points
(y2 - y1)/ (x2 - x1)
I found (1,1) and (2,4)
(4-1)/(2-1) = 3/1 = 3
The slope is 3
Y intercept = (0,y)
Find the point where x = 0
It would be (0,-2)
The y intercept is (0,-2)