Question

Using the coordinates of two points (84, 80) and (74, 65), determine the slope of the line of best fit.

Answer 1

Answer:

a.the slope of the line is 1.5

Step-by-step explanation:

Hello

if two points of a line are known(P1 and P2), it is possible to find the slope of the line, the slope of a line is given by:

$slope=\frac{y_{2}-y_{1}}{x_{2}-x_{1}} \\m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}$

$P1=(x_{1} ,y_{1}) \\P2=(x_{2} ,y_{2})$

Step 1

define

$P1=(84,80) , x_{1}=84 ,y_{1}=80\\P2=(74,65) , x_{2}=74 ,y_{2}=65$

Step 2

put the values into the equation

$m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}\\m=\frac{65-80 }{74-84}\\m=\frac{-15}{-10}\\ m=\frac{15}{10}=\frac{3}{2}=1.5$

the slope=1.5

I hope it helps, have a great day

Answer 2

The slope of the line is 1.5