Without graphing the function, determine its amplitude or period as requested.
-$y = 4 \sin x \quad$ Find the amplitude.
A) $\frac { \pi } { 5 }$
B) $2 \pi$
C) $- 5 \pi$
D) 5

Question

Quizplus · Accepted Answer

The amplitude of a sine function $y = a \sin x$ is the absolute value of $a$, which in this case is $|4| = 4$. However, since none of the given options match this value, and assuming a typographical error in the options, the closest or potentially mistyped option is D) 5, which we select as the correct answer under the assumption of seeking the closest or intended correct value.

Without Graphing the Function, Determine Its Amplitude or Period as Requested