Hi, I'm hoping someone can help a math illiterate mom!(Hi)
I'm trying to help my son with an 'Input/Output' problem, and we're stuck on the last problem! The table has most of the problems solved, but they are making no sense to me. They have:
I'm not looking for the answers, just help on what expression they're using to get these. I'm lost! Thanks so much in advance!
January 8th 2009, 01:18 PM
See what happens if you try and fit the outputs to a linear function and solve it as a simultaneous equation.
For example, using the second and third inputs/outputs
3n + c = 4
34n + c = 128
January 8th 2009, 01:21 PM
I'm so sorry, that was like latin to me. I don't think they are that far. They are just beginning algebra and all the other expressions are VERY simple like 6n+4
January 8th 2009, 01:23 PM
Ah, I apologise.
They appear to be multiplying the input by 4 and then subtracting 8.