If C. P. = Rs. 480, S. P. =Rs.528 find profit and profit percent

In this question first you should find profit amount by using formula and you should use profit amount in profit percentage formula then you should calculate it

look at the picture.

y-intercept for the function on a picture is 4 → point (0, 4).

y-intercept for the function

is for x = 0. substitute:

y-intercept is 8 → point (0, 8).