# How do you graph #y=-2sinpix# and include two full periods?

##### 1 Answer

See the explanation:

#### Explanation:

First, find the amplitude and the period and phase shifting:

amplitude:

period: for sine its period is

phase shift:

So

amplitude =

period =

fourth period:

phase shifting = no phase shifting.((starts at 0)) origin

for myself to graph

"""one thing you have to keep in your mind which is the standard graph of

it is negative so it starts at the origin and goes down if it is positive it will go up

so first point you plot at the origin then move fourth period to the right by adding

first point at the origin

to the right:

"this is a full period"

to the left by back to the origin and subtract fourth period:

plot and connect the points

these are two full periods a period at the right of the y-axis and a period to the left of the y-axis you could make them both at the right or both at the left.

graph{-2*sin(pix) [-4.93, 4.935, -2.113, 2.82]}