Question 365599
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Hi, 
*Note: solving for y puts the equation into the slope-intercept form
x + 2y = 8
y = (-1/2)x + 4
y = mx + b where m is the slope and b is the y-intercept.
(0,4) a Pt on the line and slope (-1/2)tels us: 
(2,3)&(4,2) are also a points on the line (as y decreases by 1, x increases by 2)
{{{drawing(300,300, -6, 6, -6, 6,
circle(2, 3,0.2),
circle(4, 2,0.2),
graph( 300, 300,-6,6,-6,6,-.5x+4)) }}}