Which is the endpoint of a ray?

point r
point s
point t
point u

point S

Step-by-step explanation:

The end point of each ray given is point S, as the definition of the ray states that there is only one end point, and the other continues indefinitely. Technically, if you use all the others as a start point, they also work as rays, but because S is the start point of all lines, S is the safer answer.

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make sure you have version 2.50

try looking in the very back of the book : )

step-by-step explanation:

you can download it here

thus, the first answer choice, y = sec x, is the correct one