# trig

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y = cos(4x/3 minus 1)

amplitude?

Period?

Two x - intercepts?

y-intercept?

Domain?

Range?

Shift along x?

Shift along y?

Kind of reflection?

• trig -

amplitude=1 since this is the maximum value of the function.
Period is value of x when:
4x/3 minus 1 = 2pi.
x intercepts are when:
4x/3 minus 1 = pi/2
4x/3 minus 1 = pi+(pi/2)
y intercept is when
4x/3 minus 1 = 0
Domain is minus infinity to plus infinity.
Range is -1 to +1

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