How to find slope

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

• m = (total y) / (total x)

• m = (change in x) / (change in y)

• m = (change in y) / (change in x)

• m = (total x) / (total y)

If you move from one point to another rising 2 units and running 3 units to the right, what is the slope of the line?

• 2/3

• -2/3

• 3/2

• -3/2

What is the slope of a horizontal line?

• 0

• 1

• -1

• Undefined

Using the formula method, if y2 = 1, y1 = 4, x2 = 2, and x1 = -2, what is the slope of the line?

• 3/4

• 4/3

• -3/4

• -4/3

What happens to the slope if the line is vertical?

• It is -1

• It is undefined

• It is 1

• It is 0