What is the Science Club's starting point?
(y-intercept or b)
How much does their balance increase every week?
(growth rate or m)
Put this into equation (y = mx + b) format.
Follow the same steps to find an equation for the Math Club.
What are the x- and y-values of the point where the two lines intersect?
Use the eTool below to help you with this problem.
Click on the link at right for the full eTool version: AC 4-80 HW eTool