Select the correct answer. Brianna created a scatter plot and drew a line of best fit, as shown.
What is the equation of the line of best fit that Brianna drew?

The equation of the line of best fit that Brianna drew is: c. y = 2x + 5

Recall:

Line of best of fit of the line shown in the scatter plot can be found by finding the slope (m) and the y-intercept (b) of the line then substituting each value into y = mx + b.

Thus:

Slope of a line (m) = change in y/change in x

From the scatter plot given,

Change in y = 2 units

Change in x = 1 unit

Slope = 2/1 = 2

The y-intercept is the point where the line of best fit intercepts the y-axis which is at y = 5.

y-intercept (b) = 5

Substitute b = 5 and m = 2 into y = mx + b

y = 2x + 5

Therefore, the equation of the line of best fit that Brianna drew is: c. y = 2x + 5

Learn more about line of best fit on:

link

the image of (6, 9) under a dilation is (4, 6). the scale factor is

b. 2/3

Just turn the whole gym into pie