CPM Homework Help : PC Problem 9-74

Find the equation of the line connecting the points on the function $y=\sqrt { x + 1 }$ at $x = 3$ and $x =$ 8.

Step 1:

Determine the $y$ -coordinates for each of the points.

Step 2:

Find the slope between the two points.

Step 3:

Choose one of the points and use the slope.
Write the equation of the line in point-slope form.
$\left(y − y_{1}\right) = m\left(x − x_{1}\right)$