Glencoe Math: Course 2, Volume 1
GM
Glencoe Math: Course 2, Volume 1 View details
5. Graph Proportional Relationships
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Exercise 1 Page 49

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

No, see solution.

Practice makes perfect

Before we begin, let's take a look at the information given in the table of values.

Savings Account
Week Account
Balance ($)
1 125
2 150
3 175
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 is a straight line, but does not pass through the origin. Therefore, the relationship between the two quantities from the table is not proportional.