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Mathematics 12 Online
OpenStudy (braves12):

If (-1, y) lies on the graph of y = 3x+1, then y =

OpenStudy (igreen):

Plug in -1 for 'x' and solve.

OpenStudy (igreen):

\(\sf y = 3(-1) + 1\) Can you simplify that?

OpenStudy (braves12):

yes

OpenStudy (igreen):

Okay, tell me what you get.

OpenStudy (braves12):

-3

OpenStudy (igreen):

Not quite, don't forget to add the 1.

OpenStudy (andrewishere):

This is for future reference: To remember how to do this problem, remember that to find an x-coordinate, plug in the y-value. To find the y-coordinate, plug in the x-value. If no value is given, plug in 0. This will ALWAYS work.

OpenStudy (braves12):

then is it -4

OpenStudy (igreen):

No.. -3 + 1 isn't -4.

OpenStudy (braves12):

-2

OpenStudy (igreen):

Correct.

OpenStudy (braves12):

ok

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