Johnny won a "free" fish at the fair. His parents gave him $10 which he spent on the ring toss. He is so excited about his "free" fish. What is the real cost of the fish if fish food costs $5.00 per month?
Since the initial amount is $10 for the game tickets, that was how much the "Free" fish actually cost. And M is the number of months he has the fish. This scenario can be modeled by a linear equation.
The equation would be C = 5m+10
So the actual cost of the fish is C. After 5 months the cost of the fish would be $35 (C=5*5+10), after 6 months the cost would be $40 and so on.
1. Describe TWO situations that can be modeled by a linear equation in the form y=mx+b.
2. Describe each variable in detail. Then graph the two equations. If your data is large, choose an appropriate scale and use the special zigzag (yes that is what it is called!) to indicate the graph does not start at zero.