Answer:
Option C. 0.8
Step-by-step explanation:
Nancy created a graph to predict the pay she will take home from her income.
The constant of proportionality will be = [tex]\frac{\text{Take home pay}}{\text{Nancy's income}}[/tex]
For the income of $80 constant of proportionality = [tex]\frac{48}{60}=0.8[/tex]
and for the income of $130 constant of proportionality = [tex]\frac{104}{130}=0.8[/tex]
Therefore, option C. constant of proportionality = 0.8 is the answer.
