The graph highlights two other points on the trend line. Use them to find another equation for the trend line shown for this scatter point.
A) Y=82x+998
B) Y=247.7x-335
C) Y=743x-1647

The graph highlights two other points on the trend line Use them to find another equation for the trend line shown for this scatter point A Y82x998 B Y2477x335 class=

Respuesta :

Option A:

The equation for the trend line is y = 82x + 998.

Solution:

The points on the line are (2, 1162) and (11, 1900).

Here, [tex]x_1=2, y_1=1162, x_2 = 11, y_2=1900[/tex]

Slope of the line:

[tex]$m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}[/tex]

[tex]$m=\frac{1900-1162}{11-2}[/tex]

[tex]$m=\frac{738}{9}[/tex]

m = 82

Point-slope formula:

[tex]y-y_{1}=m\left(x-x_{1}\right)[/tex]

[tex]y-1162=82\left(x-2\right)[/tex]

[tex]y-1162=82x-164[/tex]

Add 1162 on both sides of the equation.

[tex]y=82x+998[/tex]

The equation for the trend line is y = 82x + 998.

Hence Option A is the correct answer.