Question

Find the area between the graph of f and
the x-axis over the interval [−4, 1] when
f(x) = 4 + 4x.
1. Area = 34 sq. units
2. Area = 30 sq. units
3. Area = 28 sq. units
4. Area = 32 sq. units
5. Area = 26 sq. units

Answer 1

(5)

You just have two triangles. Doing a single integral uses signed areas, so you'd end up with the wrong answer.