SOLUTION: how would make table and graph y=-8x

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Question 670847: how would make table and graph y=-8x
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
To graph y=-8x, we need to plot a series of points.

To get a series of points, we need to plug in various values of x to get corresponding values of y.

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Plug in x+=+-2 to find y

y=-8x

y+=+-8%28-2%29

y+=+16

When x+=+-2, y+=+16

So we have the point (-2, 16)

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Plug in x+=+-1 to find y

y=-8x

y+=+-8%28-1%29

y+=+8

When x+=+-1, y+=+8

So we have the point (-1, 8)

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Plug in x+=+0 to find y

y=-8x

y+=+-8%280%29

y+=+0

When x+=+0, y+=+0

So we have the point (0, 0)

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Plug in x+=+1 to find y

y=-8x

y+=+-8%281%29

y+=+-8

When x+=+1, y+=+-8

So we have the point (1, -8)

------------------------

Plug in x+=+2 to find y

y=-8x

y+=+-8%282%29

y+=+-16

When x+=+2, y+=+-16

So we have the point (2, -16)

===============================================================================

So we have this list of points

(-2, 16), (-1, 8), (0, 0), (1, -8), (2, -16)

Which gives us this table 

x	|	y
------------------------------
-2	|	16
-1	|	8
0	|	0
1	|	-8
2	|	-16


To graph the line, simply pick any two points and plot them. Then draw a straight line through those two points.