Why is the slope zero? - Math questions answered - Free help

The video tutorial explains the concept of a flat line using two points with identical Y coordinates, leading to a slope of zero. It defines slope as the change in Y over the change in X and demonstrates the calculation using the slope formula. The tutorial concludes by emphasizing that when two points have the same Y coordinate, the slope is zero.

What characteristic do the Y-coordinates of a horizontal line share?

• They are all different.

• They are all zero.

• They are all positive.

• They are all the same.

What is the formula for calculating the slope between two points?

• Y1 - Y2 / X1 - X2

• Y2 - Y1 / X2 - X1

• X1 - X2 / Y1 - Y2

• X2 - X1 / Y2 - Y1

If the Y-coordinates of two points are the same, what is the slope of the line?

• Zero

• Negative

• Positive

• Undefined

How many units do you travel horizontally from -4 to 3?

• 0 units

• 4 units

• 7 units

• 3 units

Why does a horizontal line have a slope of zero?

• Because the line is diagonal.

• Because the line is vertical.

• Because the Y-coordinates are the same.

• Because the X-coordinates are the same.