The difference in the y values divided by the difference in x values is called: _____________.
The point on a graph where the line crosses the y-axis is the _________ of a line.
The variable m in the equation y=mx+b stands for the _________.
The variable b in the equation y=mx+b stands for the _________.

Find the rate of change for Train A.
Find the rate of change for Train B.
What is the cost per ounce of water at store A?

What is the slope of the line?
What does the slope represent in the context of this problem?


What is the y-intercept?
What does the y-intercept represent?

Graph the line with the equation
You can create and use a table to help you!
What is the equation of the line shown?

Identify the slope between the two points. Write as a decimal.
Write an equation for the line using your slope from question #33 and the y-intercept of -0.5.
Write an equation for the graph.
Which train is traveling at the faster rate?
What is the cost per ounce of water at store B?
Which store's bottle of water costs less per ounce?