brianna created a scatter plot and drew a line of best fit, as shown. what is the equation of the line of…

Explanation:

Step1: Recall slope - intercept form

The equation of a line is $y = mx + b$, where $m$ is the slope and $b$ is the y - intercept.

Step2: Estimate y - intercept

The line of best fit crosses the y - axis around $y = 5$. So $b\approx5$.

Step3: Estimate slope

Pick two points on the line, say $(2,9)$ and $(4,13)$. The slope $m=\frac{y_2 - y_1}{x_2 - x_1}=\frac{13 - 9}{4 - 2}=\frac{4}{2}=2$.

Answer:

C. $y = 2x+5$