Question 245521
Graphing {{{y=-2x+8}}}
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If we build a table for x and y values, your answer will become very apparent and you'll know how to graph it.  So let's do that first.
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When {{{x=-2}}}, {{{y=-2(-2)+8=4+8=12}}}
When {{{x=-1}}}, {{{y=-2(-1)+8=2+8=10}}}
When {{{x=0}}}, {{{y=-2(0)+8=0+8=8}}}
When {{{x=1}}}, {{{y=-2(1)+8=-2+8=6}}}
When {{{x=2}}}, {{{y=-2(2)+8=-4+8=4}}}
When {{{x=3}}}, {{{y=-2(3)+8=-6+8=2}}}
When {{{x=4}}}, {{{y=-2(4)+8=-8+8=0}}}
When {{{x=5}}}, {{{y=-2(5)+8=-10+8=-2}}} 
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Notice that when x=0, y=12 ... and when x=4, y=0.
With these two points, you can draw a straight line in the cartesian plane.
All other results help us confirm we're on track.
So we graph {{{y=-2x+8}}} like shown below:
{{{ graph( 400, 400, -3, 8, -3, 10, -2x+8) }}}