Question

Find the slope of the line that passes through the points (2,1) and (-7,4)

Answer 1

0.222

Explanation:

Y2-Y1 ÷ X2-X1

4-2 ÷ -7-2

2÷-9

0.222

Answer 2

`-\frac13`

Explanation:

Just the slope, so we can simply apply the definition, as variation in y over the variation in x

`m= (\Delta y)/(\Delta x) = (1-4)/(2-(-7)) = \frac {-3}{9} = -\frac13`