Question 395333
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Hi
y=-2x+2
7x+y=7  OR y = -7x + 7
Using the standard slope-intercept form for an equation of a line y = mx + b 
 where m is the slope and b the y-intercept to graph the lines:
 y = -2x + 2  |slope m = -2, y-intercept is Pt (0,2)  |Pt(1,0) another point
 y = -7x + 7  |slope m = -7, y-intercept is Pt (0,7)  |Pt(1,0) anther point
Plotting the y-intercepts and using their slopes to find another point on each line
connecting these points concludes the graphing
Note: these Lines have Pt(1,0) in common
{{{drawing(300,300, -10,10,-10,10,
 grid(1),
circle(0, 2,0.4),
circle(1, 0,0.4),
circle(0, 7,0.4),
circle(1, 0,0.4),
graph( 300, 300, -10,10,-10,10,0, -2x+2,-7x+7))}}}