Question

Consider the given plecewise function. -(3x + 7); r < -3 f(1) = 2x2 – 16; 2r2 – 16; -3 3 Select the section(s) of the graph where the function is decreasing

Answer 1

The function is again graphed below,

Remember, for decreasing functions, the y-value decreases as x value increases. It's:

Looking at the graph, the function is decreasing:

• from - infinity to - 3 (red graph)

,

• from - 3 to 0 (part of blue graph)

,

• from 3 to infinity (green graph)