Question

Kyle has his own math tutoring service. His weekly fees are shown in the table.

Number of Hours
Per Week (x) Weekly Fees (y)
1 $32
2 $57
3 $82
4 $107

Which equation represents the relationship between the number of tutoring hours per week and his weekly fees?

Answer 1

y=25x+7

Explanation:

The equation will be in the form of y=mx+c where m is gradient/slope and c is constant,

normally referred as y intercept.

Slope is given by dividing change in y by change in x

Slope=(57-32)/(2-1)=25

Therefore slope is 25

For the first term

32=25(1)+c

C=32-25=7

Therefore, the general equation will be y=25x+7