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172X - syFor what value of K are 3x + 2ky = 2 and 2x +5y = 1 graphs are parallel

Answer»

3x+2ky=2=>2ky=-3x+2=>y=(-3/2k)x+(1/k)slope(m1)=(-3/2k)

also,2x+5y-1=0=>5y=-2x+1=>y=(-2/5)x-(1/5)slope(m2)=(-2/5)

Since, graph of lines are parallel

Therefore, m1= m2that is, (-3/2k) = (-2/5)Value of k = 15/4



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