Question

Select the correct answer.

Over which interval is this function continually decreasing?
f(x) = |4(x - 1)| +2

Answer 1

Explanation:

See figure below .....

Start with the graph of |x| (red) ---this graph is decreasing from - inf to 0

now shift it RIGHT by '1' and multiply it by 4 and shift it up by '2'

this is the blue graph ..... decreasing from - inf to '1'

(-inf, 1]