Exemplar problems V — task. Mathematics CBSE, Class 10.

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1. The pair of equations

$x = a$ and

$y = b$ graphically represents lines which are

parallel
intersecting at $(a,b)$
intersecting at $(b,a)$
coincident

2. For what value of

$k$ , do the equations

$3x - y + 8 = 0$ and

$6x - ky = -16$ represent coincident lines?

$\frac{1}{2}$
$-\frac{1}{2}$
$2$
$-2$

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