Understanding Slope and Equation of a Line

What does the 'm' represent in the slope-intercept form of a line equation?

• The y-intercept

• The slope of the line

• The x-coordinate

• The origin

How do you determine the slope of a line from a graph?

• By finding the midpoint of the line

• By calculating the rise over run between two points

• By measuring the distance between two points

• By counting the number of squares the line crosses

If a line goes from a y-coordinate of 10 to 25, what is the rise?

• 25

• 35

• 10

• 15

Why is the y-intercept not included in the equation when it is zero?

• Because it is unnecessary to write plus zero

• Because it is always positive

• Because it complicates the equation

• Because it changes the slope

What is the final equation of the line if the slope is 1/2 and the y-intercept is zero?

• y = x + 1/2

• y = 1/2x

• y = 2x

• y = x