Hello!
To find the slope of line, use the formula: [tex] \frac{y_{2}-y_{1}}{x_{2}-x_{1}} [/tex].
Then, assign [tex] x_{1} [/tex], [tex] x_{2} [/tex], [tex] y_{1} [/tex] and [tex] y_{2} [/tex] to ordered pairs. [tex] x_{1} [/tex] and [tex] y_{1} [/tex] is assigned to one of the ordered pairs, and in this case, it can be (-3, 3), and [tex] x_{2} [/tex] and [tex] y_{2} [/tex] is assigned to the other ordered pair, (18, 26).
m = [tex] \frac{26-3}{18-(-3)} = \frac{23}{21} [/tex]
Therefore, the slope of this trend line is 23/21.
