Question

if (d,4) lies on 3x+y=10, then the value of d is

Answer 1

see d isx here replace it u will get the ans
3d +4=10
3d=6
d=2

Answer 2

We have,3x+y= 10 .if the point (d,4) lies on 3x+y= 10
then
3d+4= 10
or, 3d= 10-4
or, 3d = 6
or, d= 2