<PRE><B>Question 626564</B>
1. Find the value of b so that 3x-2y=4 is parallel to 6x+by=12
The slopes must be the same.
1st equation has a slope of 3/2
2nd equation has aslope of -6/b
Solve: -6/b = 3/2
b = -4
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2. Find the value of c so that x-3y=c will pass through (2,-1)
When x = 2, y must be -1.
x - 3y = c
2 - 3*-1 = c
2 + 3 = c
c = 5
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cheers,
Stan H.
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