QUESTION IMAGE
Question
what is the equation of the trend line in the scatter plot? use the two yellow points to write the equation in slope - intercept form. write any coefficients as integers, proper fractions, or improper fractions in simplest form.
Step1: Identify the two - yellow points
The two yellow points are $(7,0)$ and $(5,8)$.
Step2: Calculate the slope $m$
The slope formula is $m=\frac{y_2 - y_1}{x_2 - x_1}$. Let $(x_1,y_1)=(7,0)$ and $(x_2,y_2)=(5,8)$. Then $m=\frac{8 - 0}{5 - 7}=\frac{8}{-2}=-4$.
Step3: Use the point - slope form to find the y - intercept $b$
The point - slope form is $y - y_1=m(x - x_1)$. Using the point $(7,0)$ and $m=-4$, we have $y-0=-4(x - 7)$. Expanding gives $y=-4x + 28$.
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$y=-4x + 28$