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ordered pairs and linear relations

The ordered pairs below represent a linear relation between x and y.

(-3,0), (-2,4), (-1,8), (0,12), (1,16), (2,20)

Which of the following is a correct statement about this relation?

A. The slope of the line represented by this table is -4 and the y- intercept is 12.

B. The slope of the line represented by this table is 4 and the y-intercept is 12.

C. The slope of the line represented by this table is 4 and the y-intercept is -3.

D. The slope of the line represented by this table is -4 and the y-intercept is -3.
math   precalculus   
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Answer #1
it is b... APEX
answered by: pele
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Answer #2
the answer is a. you can tell when you plot it, as well as the slope formula: change in rise divided by change in run.

20-16 is 4, divided by 2-1 which is one. slope is equal to 4.

the y-intercept is the point where x=0; having said this, when x=0, y=12.
answered by: zyria
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