Question

pls help me in this sum pls fast​

Answer 1

Answer:b=-9

Step-by-step explanation:

slope of line AB = y2-y1/x2 - x1

m = b-3/4+2

m=b-3/6

equation of line 2x-4y=5

divide through 5 by -4

-x/2 +y = -5/4

y= x/2 - 5/4

on comparing with y=MX+c

we get slope of line ,say m2

m2=1/2

b

if two lines are perpendicular then product of their slope will be -1

1/2 × b-3/6 =-1

b-3 = -12

b=-9

Please Mark as Brainliest