Question 392170
5x+3y=4
3y=-5x+4
y=(-5/3)x+4/3.......................1
..
3x-5y=5
5y=3x-5
y=(3x/5)-1...........................2
..
m1*m2 = -1
so they are perpendicular lines
Lets graph it
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{{{graph(300,300,-3,3,-3,3,((-5/3)x+4/3),((3x/5)-1))}}}
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m.ananth@hotmail.ca