Question

What is the cost of one ticket ?

Answer 1

The answer is $1.50 because you divide 21/14

Answer 2

Using the graph, we see the point $(2,3)$ and the graph is linear. This represents 2 tickets cost 3 dollars. We divide 3 by 2 to find the unit rate of each ticket. (We can do this because the graph increases at a constant rate. Our answer is $\frac{3}{2}=1.50$ dollars.