Question

Josiah’s parents pay him for each chore he completes. He created a table to show his earnings each week for the past month.

Josiah’s Earnings

Week 1
Week 2
Week 3
Week 4
Chores Completed
4
6
4
5
Money Earned
$12
$18
$12


Which graph correctly depicts his earnings including the last week?
On a coordinate plane, a graph titled Josiah's Earnings has chores completed on the x-axis and Money Earned on the y-axis. Points (4, 12), (5, 15), and (6, 18) are plotted.
On a coordinate plane, a graph titled Josiah's Earnings has chores completed on the x-axis and Money Earned on the y-axis. Points (12, 4), (15, 5), and (18, 6) are plotted.
On a coordinate plane, a graph titled Josiah's Earnings has chores completed on the x-axis and Money Earned on the y-axis. Points (4, 12), (6, 2), (6, 18), and (8, 8) are plotted.
On a coordinate plane, a graph titled Josiah's Earnings has chores completed on the x-axis and Money Earned on the y-axis. Points (4, 12), (5, 18), and (6, 18) are plotted.

Answer 1

The first graph.

Reason: From (4, 12) and (6, 18) Josiah earns $18/6 = $3 per chore (or $12/4 = $3 per chore). For 5 chores he would earn 5 × $3 = $15, so the points are (4,12), (5,15), (6,18).