Practice problem
Which of the following functions produces a graph that is not continuous?
f(x)=2x+3f(x)=2x+3f(x)=2x+3
f(x)=2x2−1f(x)={2x^2-1}f(x)=2x2−1
f(x)=2x2−1x+4f(x)=\frac{2x^2-1}{x+4}f(x)=x+42x2−1
Type a concept, like “slope” or “photosynthesis”.