Question

What is the slope of a trend line that passes through the points (-3,3) and (18,26)

Answer 1

Hello!

To find the slope of line, use the formula: $\frac{y_{2}-y_{1}}{x_{2}-x_{1}}$.

Then, assign $x_{1}$, $x_{2}$, $y_{1}$ and $y_{2}$ to ordered pairs. $x_{1}$ and $y_{1}$ is assigned to one of the ordered pairs, and in this case, it can be (-3, 3), and $x_{2}$ and $y_{2}$ is assigned to the other ordered pair, (18, 26).

m = $\frac{26-3}{18-(-3)} = \frac{23}{21}$

Therefore, the slope of this trend line is 23/21.