Question

How do I use technology to find an equation of the line of best fit for the data? Round slope to the nearest tenth, and y-intercept to the nearest integer.

x=-15 , -10 , -5 , 0 , 5 , 10 , 15 , 20
y= -4 , 2 , 7 , 16 , 22 , 30 , 37 , 43

Answer 1

The equation of the line of best fit for the data is y = 1.4x + 16.

To find the equation of the line of best fit for the given data using technology, follow these steps:

Identify the data points: x = -15, -10, -5, 0, 5, 10, 15, 20

y = -4, 2, 7, 16, 22, 30, 37, 43

Round the slope (m) to the nearest tenth and the y-intercept (b) to the nearest integer.

In this case, the equation of the line of best fit is y = 1.4x + 16. Rounding the slope to the nearest tenth and the y-intercept to the nearest integer, we get y = 1.4x + 16.