How do you graph $y=-2+3cos(x-pi)$ ?

Question

1966 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2018-06-18T01:35:16

As below.

Standard form of cosine function is $y = A cos (Bx - C) + D$

$"Given : " y = 3 cos (x - pi) - 2$

$A = 3, B = 1, C = pi, D = -2$

$"Amplitude " = |A| = 3$

$"Period " = (2pi) / |B| = (2pi) / 1 = 2pi$

$"Phase Shift " = -C / B = -pi / 1 = -pi, pi " to the LEFT"$

$"Vertical Shift " = D = -2$

graph{3 cos (x - pi) - 2 [-10, 10, -5, 5]}

How do you graph y=-2+3cos(x-pi)y=-2+3cos(x-pi)?