Find the period and amplitude.
Y = -7 sin x

A)Period: $\pi$; Amplitude: -7
B)Period: $\pi$; Amplitude: $\frac { 1 } { 7 }$
C)Period: 2 $\pi$; Amplitude: 7
D)Period: 2 $\pi$; Amplitude: $- \frac { 1 } { 7 }$
E)Period: 2 $\pi$; Amplitude: 1

Question

Find the period and amplitude.  
Y = -7 sin x
 
A)Period: $\pi$; Amplitude: -7
B)Period:  $\pi$; Amplitude: $\frac { 1 } { 7 }$
C)Period: 2 $\pi$; Amplitude: 7
D)Period: 2 $\pi$; Amplitude: $- \frac { 1 } { 7 }$
E)Period: 2 $\pi$; Amplitude: 1

Quizplus · Accepted Answer

The period of a sine function is $2\pi$, regardless of its coefficient. The amplitude is the absolute value of the coefficient of the sine function, which is 7 in this case.

Find the Period and Amplitude π\piπ ; Amplitude: -7 B)Period π\piπ ; Amplitude

Find the Period and Amplitude $\pi$ ; Amplitude: -7
B)Period $\pi$ ; Amplitude