I personally use y2-y1 over x2-x1 because it's simple. Plot two y values and two x values. The first ones you plotted are x1 and y1, the others are x2 y2. Now subtract y2-y1 and x2-x1. Afterwards, divide the y value by the x value, that will give you slope.
Answer:
it 12
i litterally just got it right so...
U minus them?or plus them?
First work out the difference:
75-40 = 30
30/75 * 100 = 40% decrease.
Please mark as brainliest
