Calculating Slope: Key Concepts and Techniques

This video tutorial covers Unit 3, focusing on slope and graphing lines. It reviews the concept of slope as the rate of change, explaining the four types: positive, negative, zero, and undefined. The tutorial demonstrates how to graph slopes from a point and calculate slopes from graphs and tables using the rise over run method and the slope formula.

What does a positive slope indicate about the direction of a line?

• The line is vertical.

• The line goes up from left to right.

• The line goes down from left to right.

• The line is horizontal.

Which type of slope looks like the top of a Z?

• Zero slope

• Undefined slope

• Negative slope

• Positive slope

When graphing a slope, what does 'rise over run' mean?

• The steepness of the line

• The number of points on the graph

• The vertical change over the horizontal change

• The direction of the line

How do you graph a slope of 2 from a point?

• Up 2, right 1

• Down 1, right 2

• Down 2, right 1

• Up 1, right 2

What is the first step in finding the slope from a graph?

• Count the run

• Find two perfect points

• Label the points

• Count the rise

If a line goes up 1 unit and right 2 units, what is the slope?

• 1

• 2

• 2/1

• 1/2

What is the slope formula used to calculate the slope from two points?

• (x2 - x1) / (y2 - y1)

• (y1 - y2) / (x1 - x2)

• (y2 - y1) / (x2 - x1)

• (x1 - x2) / (y1 - y2)

If the slope calculated from two points is 0, what does it indicate about the line?

• The line goes down

• The line goes up

• The line is horizontal

• The line is vertical

How do you find the slope from a table?

• By finding the change in Y over the change in X

• By counting the number of rows

• By subtracting the smallest value from the largest value

• By adding all the values

What does it mean if the slope is undefined?

• The line has a positive slope

• The line has a negative slope

• The line is vertical

• The line is horizontal