Answer:
The graph is below.
Explanation:
Linear regression is a linear approach to modelling the relationship between a dependent variable and one or more independent variables.
Let X be the independent variable and Y be the dependent variable. We will define a linear relationship between these two variables as follows:

We have the following data:

To find the line of best fit for the points, follow these steps:
Step 1: Find
and
as it was done in the table.
Step 2: Find the sum of every column:

Step 3: Use the following equations to find intercept a and slope b:

Step 4: Assemble the equation of a line

The graph of the regression line is: