Understanding Slope and Line Characteristics

The video tutorial explains the concept of slope, starting with the general formula. It covers different types of slopes: zero slope for horizontal lines, undefined slope for vertical lines, positive slope for lines pointing up to the right, and negative slope for lines pointing down to the right. Each type of slope is illustrated with examples, highlighting the differences in their calculations and characteristics.

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

• run over rise

• x = my + b

• rise over run

• y = mx + b

If two points on a line have the same y-coordinate, what is the slope of the line?

• Negative

• Undefined

• Zero

• Positive

What is the slope of a line if the x-coordinates of two points are the same?

• Positive

• Undefined

• Zero

• Negative

Which of the following describes a line with a positive slope greater than one?

• The line is vertical.

• The line points up to the right and rises more than it runs.

• The line is horizontal.

• The line points down to the right.

For a line with a positive slope that is a fraction, what happens when you move one unit to the right?

• You move more than one unit up.

• You stay at the same height.

• You move less than one unit up.

• You move one unit down.

What is the characteristic of a line with a negative slope?

• It is vertical.

• It points down to the right.

• It is horizontal.

• It points up to the right.