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The equation for the above sinusoidal function is sin(x+pi/2)

Thanks for helping me out! When I first posted this pic the info didn't attach well with it..I apologize..

This graph has points going through (-5,0) and (1,0) (that looks to me to be the full period) 2pi/absolute value of B.

B= 2pi/6= pi/3

y=-sin(x(pi/3))

But to have it go through those points I need to shift the graph over pi/3

Y=-sin(x(pi/3)-pi/3)

That's what I got.

sorry for the mistake, the x axis is in radians so

the equation would be,sin (x+2pi/3)which is also equal to -sin(x-2pi/3)

full period goes from (0 ,-2) to (0,4)

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