Question

Is the line 3x + 4y + 7 = 0 perpendicular
to the line 28x – 21y + 50 = 0 ?

i need explanation step by step

sry I pressed english by mistake

Answer 1

Answer:

we know that slope = a/b.

Where a and b are the constants of x and y

when two slopes are perpendicular then product of slopes is -1

slope of first line is 3/4

slope of second line -4/3

if we multiply both we get -1 .So both the lines are perpendicular

Answer 2

hope it helps you..........