Given the slope m and a point (a,b) of a line, its equation is given by

In your case, a = -4, b = 7 and m=1/2, so we have

Answer:
$564
Step-by-step explanation:
- Multiply $9400 by .06 - You should get $564 -
You earn $15.00 for mowing one lawn.
15*7=105
You earn $105.00 for mowing 7 lawns.