Question

What is the graph's approximate rate of change? A. -1/2 B. 1/2 C.-9/10 D. 9/10

Answer 1

Rate of change is slope. Slope is rise over run, or change of y over change in x. Our two point to use are (1/2,2) and (-3,-1).
Therefore:

`(y1-y2)/(x1-x2) = (2-(-1))/( (1)/(2)-(-3) ) = (3)/( (7)/(2) ) = (6)/(7)`