David had a coupon for the grocery store. He started graphing on the x-axis what his total bill would be if he didn’t use the coupon and graphing on the y-axis what his total bill would be if he used the coupon. Grocery Bill
A graph has bill without coupon on the x-axis and bill with coupon on the y-axis. A line goes through points (2, 0) and (3, 1).

Based on the information in the graph, develop an equation and use it to determine if David’s bill came to $66 after the coupon was applied, how much would his bill have been if he hadn’t used the coupon?
$64
$65
$67
$68