Question 64761
FIRST FIND THE SLOPE
(4-3)/(2-1)
1/1=1 SLOPE IS 1
NOW SUBSTITUTE ONE SET OF POINTS IN THE EQUATION Y=mX+b TO FIND THE Y INTERCEPT
3=1+b
b=3-1
b=2 THUS WE HAVE THE LINE EQUATION 
AN ADDITIONAL POINT ON THIS LINE CAN BE FOUND BY SETTING Y=0 THUS
0=X+2
X=-2 OR THE OTHER POINT IS(-2,0)
{{{graph(300,200,-6,6,-6,6,y+x+2)}}}
(graph 300x200 pixels,x from -6 to 6,y from -6 to 6, y+x+2)
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MERRY CHRISTMAS