Which statement regarding the function y=cos(x) is true? a. cos(x) = cos(-x) b. since the cosine function is even, reflection over the x-axis does not change the graph. c. cos(x) = -cos(x) d. the cosine function is odd, so it is symmetrical across the origin.

135 is your answer

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try 180 times three then divide that number by 4 (sides) to get your answer. im glad to : )

a function could be identified in 3 ways either on a chart,graph, or ordered pairs. first a function is that each point has its own. the rule is that there can be many x's to one y but there can not be 2 x's at different y's. so on a graph when you put a straight line through the y's there should be one dot only to be a function.

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