Question 150403
9. 2x - 4y - 14 = 0 
Divide thru by 2 to get:
x -2y - 7 = 0
solve for "y":
Add 2y to both sides to get:
2y = x - 7
Divide thru by 2 to get:
y = (1/2)x - (7/2)
If x = 0, y = -7/2
If x = 1, y = -3
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Plot those two points and draw a line thru them.
{{{graph(400,300,-10,10,-10,10,(1/2)x -(7/2))}}}
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15. y = -x -15
If x = 0, y=-15
If x = 1, y = -16
Plot those two points and draw a line thru them
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{{{graph(400,300,-20,20,-10,10, -x-15)}}}
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Cheers,
Stan H.