A hint to get started
Write the modulus curve piecewise before integrating
Without using a calculator, find the area of the region bounded by , the -axis and the lines and .
CJC · Lecture · Example 9
The Teacher explicitly instructs that the modulus curve must be written as a piecewise function; the source already prints both the sign test and equivalent x ranges. Both forms are retained in the first step.
The Teacher fills the two-integral setup and shades the correct region, with height 4 and boundary 3. Text extraction drops the modulus bars, so the prompt was checked directly against both rendered pages.