This is similar to Problem 3 from your Section 4.1 worksheet.

Determine whether the following graphs represent $y$ as a function of $x.$ In each graph, the $x$-axis is horizontal and the $y$-axis is vertical.

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? Yes No 1. Does the graph represent a function of $x$?

? Yes No 2. Does the graph represent a function of $x$?

? Yes No 3. Does the graph represent a function of $x$?

? Yes No 4. Does the graph represent a function of $x$?

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Note: You can click on the graphs to enlarge the images.

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Note: You only have three attempts at this problem.

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