What is the measure of x?
Angles are not necessarily drawn to scale.

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.

step-by-step explanation:

~dasgupta/mathbook/append17dec2k8.pdf

the answer to your question might be 45 degrees.

90+45=135

180-135=45