Without graphing, determine the equation of the axis of the function y=-2.6 cos(5x) + 8.4

Question

asked Mar 10, 2021 52.2k views

1 Answer

Vidar Kongsli · Answer 1 · 2021-03-15T14:14:37+0000

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Step-by-step explanation:

The given equation is in the form

y = A*cos(B(x-C))+D

where

A = -2.6

B = 5

C = 0

D = 8.4

The value of D determines the horizontal axis that passes through the center of the cosine function. The equation of this axis line is y = 8.4

This is a horizontal line in which all points have y coordinate of y = 8.4