ADM-17 · Advanced Math

Features of quadratic and polynomial functions

Functions and exponentials · Stage 3

01 · Key idea

Zeros are input values that make the function equal zero.

Useful ruleZeros, intercepts, end behavior, extrema

Build on: ADM-04 ADM-07

02 · Worked example

For f(x)=(x−1)(x+4), what are its x-intercepts?

This teaching example is original and is not an official SAT question.

Reasoning

Set each factor to zero: x−1=0 or x+4=0.

Answer

x = 1 and x = −4

03 · Next step

Practice questions remain in English, as on the SAT.

ADM-17 · Features of quadratic and polynomial functions