Graph the set of data. Decide whether a linear model is reasonable. If so, draw a trend line and write its equation: {(1,7),(-2,1),(3,13),(-4,-3),(0,5)}
start at 0 (center). go right 1, then up 7. starting from 0 (center) go left 2, then up 1. Starting from 0 (center) go right 3, then up 13. starting from 0 (center) go left 4, then down 3. starting from 0 (center) stay at 0, then go up 5.
