Question 466514
to graph this, we make y = 8500*x where x is the interest rate.
since the graph shows x as an integers from 1 to 20, then we need to modify the equation to show as y = 8500 * .01*x.
this gets us the decimal equivalent of the percent.
10% = .1
1% = .01
etc.
the graph will look like this:
{{{graph(600,600,-20,20,-2000,2000,8500*.01x,1020)}}}
i drew a horizontal line at y = 1020 to show you that when x = .12, y = 1020.
8500 * .12 = 1020 which is the simple interest on 8500 when the rate is equal to .12, or 12%.
if you trace a vertical line at x = 12, you will see that it intersect the line of the equation at y = 1020.