Question

If a dog is 4 years old, predict what his weight should be?Does this model the data given in the graph?

Answer 1

The dog is 4 years old.

For Greg's prediction:

$y=\frac{1}{2}x$

Where x represents the age.

Set x=4, then:

$\begin{gathered} y=\frac{1}{2}x \\ y=\frac{1}{2}(4) \\ y=2 \end{gathered}$

So, Greg predicts 2 pounds.

Now, looking at the graph.

When x=4 the line is 7.

Hence, the graph predicts 7 pounds. So, Greg's prediction is incorrect.

The correct answer is option C.