IXL | Understand y-intercepts

Select the graphs that show a proportional relationship between

and

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Learn with an example

Select the graphs that show a proportional relationship between

and

Two variables have a proportional relationship if the ratio of one variable to the other is constant.

The graph of a proportional relationship between

and

is a straight line passing through the origin, (0, 0).

To determine whether a graph shows a proportional relationship between

and

see if it is a straight line passing through the origin.

This graph is a straight line passing through the origin.

So, this graph represents a proportional relationship between

and

This graph is a straight line, but it does not pass through the origin.

So, this graph does not represent a proportional relationship between

and

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