Question

if (2,-1) is a solution of 4x+by+4=0 then the value of b is​

Answer 1

Answer:

b = 12

Step-by-step explanation:

From (2,-1)

. x=2

& y= -1

Put x , y values in given equation .

4x+by+4=0

4(2)+b(-1)+4=0

8-b+4=0

-b+12=0

-b= -12

By cancellation property :

b = 12