First slide

Equation of line in Straight lines

Question

The equation of the line passing through (1,2) and having a distance equal to 7 units from the point (8,9) is

Moderate

A

$y = 3 x - 1$
B

y = 2
C

x = 4
D

$x + y = 3$

Solution

Distance from (8,9) to line $y - 2 = m (x - 1)$ is 7 $\Rightarrow m = 0$

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