Question

what is the equation of the trend line in the scatter plot? use the two blue points to write the equation in slope - intercept form. write any coefficients as integers, proper fractions, or improper fractions in simplest form.

Explanation:

Step1: Identify the two - point coordinates

The two blue points are $(1,1)$ and $(6,7)$.

Step2: Calculate the slope $m$

The slope formula is $m=\frac{y_2 - y_1}{x_2 - x_1}$. Substituting $(x_1,y_1)=(1,1)$ and $(x_2,y_2)=(6,7)$ gives $m=\frac{7 - 1}{6 - 1}=\frac{6}{5}$.

Step3: Use the point - slope form to find the y - intercept $b$

The slope - intercept form is $y=mx + b$. Using the point $(1,1)$ and $m=\frac{6}{5}$, we substitute into the equation: $1=\frac{6}{5}\times1 + b$. Solving for $b$: $b=1-\frac{6}{5}=-\frac{1}{5}$.

Answer:

$y=\frac{6}{5}x-\frac{1}{5}$