Learn how to write the equation of a best fit line using two points

The video tutorial demonstrates how to estimate a best fit line using two points on a graph. It covers plotting points on an X&Y axis, selecting appropriate points for the line, and writing a linear equation. The tutorial also explains how to calculate the slope and intercept to form the equation of the best fit line.

What is the first step in estimating a best fit line?

• Calculating the slope

• Plotting the points on a graph

• Drawing a random line

• Choosing the y-intercept

When selecting points for a best fit line, what is important to consider?

• The points should be on the x-axis

• There should be an equal number of points above and below the line

• The points should be close to each other

• The points should be as far apart as possible

How is the slope of a line determined?

• By subtracting the y-coordinates and dividing by the change in x-coordinates

• By multiplying the x and y coordinates

• By adding the x and y coordinates

• By dividing the x-coordinates by the y-coordinates

What is the formula used to calculate the slope of a line?

• (x1 * x2) / (y1 * y2)

• (y1 + y2) / (x1 + x2)

• (x2 - x1) / (y2 - y1)

• (y2 - y1) / (x2 - x1)

What is the next step after finding the slope in determining the best fit line?

• Drawing the line

• Recalculating the slope

• Choosing another point

• Solving for the y-intercept

Which form is used to write the equation of the best fit line?

• Standard form

• Exponential form

• Slope-intercept form

• Quadratic form

What is the final equation of the best fit line in this example?

• y = 15/22x + 84/22

• y = -15/22x - 84/22

• y = 15/22x - 84/22

• y = -15/22x + 84/22