713m/13hrs equals your rate then time = 605m/rate. use the units to help you
y = - 2x + 7; slope m = -2
Parallel lines, slope is the same
So y = -2x + b
b = y + 2x
Passing thru (4 , 1)
Plug in
b = 1 + 2(4)
b = 9
Equation
y = - 2x + 9
Multiplying by 1 keeps it the same. A number greater than 1 would be an increase and a number below 1 would be a decrease.
The decrease is 2.7% which is written as 0.027 as a decimal.
Subtract that from 1:
1 - 0.027 = 0.973
The multiplier would be 0.973