Exercise 1 Page 48

Can you connect the points with one straight line that passes through the origin?

Yes, see solution.

Practice makes perfect

Before we begin, let's create a table of values using the information from the exercise.

Tickets	1	2	3
Cost ($)	12	24	36

To know if the data given in the table represents a proportional relationship, let's first plot the points as (x,y) coordinate pairs.

Next, we will connect the points we graphed and extend the line to the y-axis. Recall that the graph of a proportional relationship is a single, straight line in the coordinate plane that passes through the origin.

As we can see, the line passes through the origin and is a straight line. Therefore, the cost is proportional to the number of tickets.

Subchapter links

Guided Practice p.48

Independent Practice p.49-50

H.O.T. Problems p.50

Standardized Test Practice p.50-52

Extra Practice p.51

Common Core Review p.52

Exercise 1 Page 48

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