Open Middle®
Directions: Use the integers -9 to 9, at most two times each, fill in the boxes to create an exponential growth function with the greatest possible y-intercept.
Hint
How do each of the values you can choose affect the values of the y-intercept?
Answer
The greatest possible y-intercept is 9 and can be gotten through an equation like:
y = 4 * 2^(x+0) + 5
y-intercept: 9
Source: Robert Kaplinsky
Why not the function 8×9^(x+9)+8 with the y-intercept 8(9^9+1)?
Oh I get it – the y-interceot is one digit only. Feel free to delete both my comments please!