Question

Find equation of the line perpendicular to the line x – 7y + 5 = 0 and having x intercept 3.

Answer 1

The given equation of line is.

, which is of the form y = mx + c

∴Slope of the given line

The slope of the line perpendicular to the line having a slope of is

The equation of the line with slope –7 and x-intercept 3 is given by

y = m (x – d)

⇒ y = –7 (x – 3)

⇒ y = –7x + 21

⇒ 7x + y = 21