SSC Selection Post 2025 PYQ — Question 47

7x + 4y = 6

y = mx + c

4y = −7x + 6

y = −7x/4 + 6/4

Slope of the line -

m₁ = −7/4

Product of the slopes of perpendicular lines = −1

m₁ × m₂ = −1

(−7/4) × m₂ = −1

m₂ = 4/7