Write the equation of a line from a given graph

The video tutorial explains how to find the equation of a line in slope-intercept form, which is y = mx + b. It covers identifying the Y-intercept by locating where the graph crosses the Y-axis and calculating the slope by determining the change in Y-coordinates between two points on the graph. The tutorial concludes with a review of the concepts covered.

What does the 'm' represent in the slope-intercept form equation y = mx + b?

• The slope

• The x-coordinate

• The y-coordinate

• The y-intercept

Where does the y-intercept appear on a graph?

• Where the graph crosses the y-axis

• At the highest point of the graph

• Where the graph crosses the x-axis

• At the origin

If a graph crosses the y-axis at 5, what is the y-intercept?

• 0

• 10

• 5

• -5

How do you determine the slope from a graph?

• By counting the number of grid squares

• By finding the y-intercept

• By calculating the change in y over the change in x

• By measuring the distance between two points

What is the slope if the change in y is -6 and the change in x is 3?

• 2

• -2

• 3

• -3