4 Sara is saving her money in a piggy bank
and counts it each month. The graph
shows her monthly savings. Choose any
two points and draw a slope triangle.
Dilate the slope triangle along the graph
to determine whether the amount Sara
saves each month is constant.
Dollars Saved
140
120
100
80
60
40
20
0
0 1 2 3 4 5 6 7 8 9 10 11 12
Months