### Home > PC3 > Chapter 7 > Lesson 7.2.4 > Problem7-114

7-114.
1. Let f(x) = x2 + 2x − 1. Homework Help ✎

1. Evaluate and simplify .

2. Explain what your answer represents on the graph of y = f (x).

$\frac{(5 + h)^2 + 2(5 + h) - 1 - (5^2 + 2(5) - 1)}{h}$

This is a slope expression.