y-intercept = 250
Slope = [tex]-\frac{10}{3}[/tex]
Solution:
The y-intercept of the estimated line of best fit is at (0, b).
y-intercept means the point which crosses the line at y-axis.
In the given graph, line crosses at y-axis is (0, 250).
So that b = 250
y-intercept = 250
Take any two points on the line of the graph.
Let the points are (0, 250) and (30, 150).
Slope of the line:
[tex]$m=\frac{y_2-y_1}{x_2-x_1}[/tex]
[tex]$m=\frac{150-250}{30-0}[/tex]
[tex]$m=\frac{-100}{30}[/tex]
[tex]$m=-\frac{10}{3}[/tex]
Slope = [tex]-\frac{10}{3}[/tex]
