Point-slope form is written as : y - y1 = m(x - x1), where m is the slope and (x1, y1) is the point.
The slope (m) is found by the change in Y over the change in X
Slope = (y2 - y1) / (x2 - x1)
You can use either given point for x1 and y1 so you would calculate the slope and replace m with the slope, then replace x1 and y1 in the equation with their value.
Answer:
h(g(x))=h(3x^2+1)=2(3x^2+1)=6x^2+2
I think it would be 153/60 sec which is 2.55 seconds per beat.
