Question 310002
Draw a linear graph on the same set of axes and determine the points of intersection from the graphs drawn: 
y=x+1
Plot two points and graph:
Let x= 0, then y = 1 giving you point (0,1)
Let x= 2, then y = 3 giving you point (2,3)
Plot and graph:
{{{graph(400,300,-10,10,-10,10,x+1)}}}
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y=-2x-1
Let x= 0, then y = -1 giving you point (0,-1)
Let x = 2, then y = 3 giving you point (2,3)
Plot and graph:
{{{graph(400,300,-10,10,-10,10,-2x+1)}}}
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y=x-3
Let x = 0, then y = -3 giving you point (0,-3)
Let x = 2, then y = -1 giving you point (2,-1)
Plot and graph:
{{{graph(400,300,-10,10,-10,10,x-3)}}}
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Plotting them on one set of axis, look for a common point of intersection:
{{{graph(400,300,-10,10,-10,10,x+1,-2x-1,x-3)}}}
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The points of intersection are (-2/3 , 1/3) and (2/3, -2 1/3)
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Cheers,
Stan H.
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