Question

if the lines 2x+3y-10=0 and 3x-ay-25=0 are perpendicular, then the value of 'a' is

Answer 1

Heya!!!

Answer to your question:

♡If lines are perpedicular, then product of their slopes is -1.

Slope of line 2x+3y-10=0 =>-2/3

Slope of line 3x-ay-25=0 =>3/a

Product=-1

(-2/3)(3/a)=-1

-2/a=-1

a=2

Hope it helps ^_^