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Mathematics 22 Online
OpenStudy (anonymous):

When comparing the graphs of y = x and y > x, what is a difference in the graphs? A. An ordered pair solution that lies on y = x, is not a solution for y > x. B. An ordered pair solution that lies on y = x, is a solution for y > x. C. The graph of y = x rises from left to right, whereas the graph of y > x falls from left to right D. The graph of y = x rises from right to left, whereas the graph of y > x falls from right to left.

OpenStudy (anonymous):

@Psymon Help Please

OpenStudy (psymon):

I'm currently in another problem, so I might bea bit slow x_x

OpenStudy (anonymous):

:(

OpenStudy (psymon):

Well, it would be A. Here's why: So if we graph both y = x AND y > x, the graph is basically the same. In terms of graphing, even though we have the > sign, we still graph it the same way.

OpenStudy (anonymous):

Thanks!

OpenStudy (psymon):

|dw:1376362086800:dw| Now the only difference was that I drew a dashed line for the 2nd graph. The first graph is y = x, the second y > x. Now in terms of solutions, solutions for y = x are only points where x and y are the same. But for y > x, solutions are only for values where y is bigger than x, but NOT the same. If I have: \[y \ge x\] I can say that the solution is all values of y that are the same as x or greater than x. But for y > x, I have to say that the solutions are all values of y greater than x, but not including x. So main difference: y = x solutions are on the line, y > x solutions are all above the line. SO saying all that, answer A says a solution for y = x is not a solution for y > x. Well this is true because y > x means solutions have to be greater than x. SO this is why A is correct.

OpenStudy (anonymous):

WOW . Thanks @Psymon !

OpenStudy (psymon):

Hopefully all of that makes sense then :3

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