A line passes through (x₁, y₁) and (h, k). ...

NCERT Class XI Mathematics - Straight Lines - Solutions

Question : 12 of 74

Marks: +1, -0

A line passes through

(x_1, y_1)

and (h, k). If slope of the line is m, show that k –

y_1

= m (h –

x_1

Solution:

A line passes through

(x_1, y_1)

and (h, k). Also, the slope of the line is m.

So, m =

\frac{k-y_1}{h-x_1}

⇒ (k –

y_1

) = m(h –

x_1

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