Lets say Y is the amount they will save.
So Melinda's savings could be described by the equation Y=22+10X, where X is the number of weeks. The same goes to George, but his equation would be Y=10+13X.
To save the same amount, their equations must match:
22+10X = 10+13X
Solving this, one gets
12 = 3x
=> 4=x
So the answer is 4 weeks.
What is the question here
Answer:
Step-by-step explanation:
Two variables are directly proportional, such that y/x=c,
and satisfying the equation y=ax+b.
y=ax+b is the general form of linear equations, where, y:= dependant variable,
x:= independent variable,
a:= the slope, and b:=y-intercept
x-intercept = -b/a
