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Coordinate Geometry
Determine the value of $\lambda$ so that 1 is the slope of line passing through (1,1) and $(\lambda,4)$?
$(a)\;4\qquad(b)\;6\qquad(c)\;3\qquad(d)\;7$
jeemain
math
class11
coordinate-geometry
straight-lines
slope-of-a-line
ch10
q2
easy
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asked
Feb 3, 2014
by
sreemathi.v
retagged
Sep 18, 2014
by
sharmaaparna1
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1 Answer
We know the slope of a line is given by $m=\large\frac{y_2-y_1}{x_2-x_1}$
So $\large\frac{4-1}{\lambda-1}$$=1$
$4-1=\lambda -1$
$\lambda =4$
Hence (a) is the correct answer.
answered
Feb 3, 2014
by
sreemathi.v
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