Find the slope of the line that passes through (18, 86) and (-6, 70).

Slope: (y2-y1)/(x2-x1)
(70-86)/(-6-18) = -16/-24 = 2/3
The slope is 2/3

He should collect all the good reasons why having a smart phone can be useful . On a piece a paper her can write all the good reasons . Which can be making an emergency call if anything , calling the police or using the internet to google important questions