Helping students gain understanding and self-confidence in algebra.
burnbird16 wrote:Yet another problem for your brilliant minds to ponder!
Simplify (f(x+h) - f(x))/h, where f(x) = 2x+3
Here's what I did, please tell me if I made an error.
2(x+h) +3 - 2x - 3 / h
2x + 2h + 3 - 2x - 3 /h
Thank you for your help!
burnbird16 wrote:Ok, thank you. So was I correct,then? If so, I have a few more I would like for you to look at, if you have time.
30. a) The graph of a quadratic function has x-intercepts, -1 and 3, and a range consisting of all numbers less than or equal to 4. Determine an expression for the function. (I tried to reverse factor, but I got a positive parabola, not a negative one.)