Question

Consider the functions f(x)=root x and g(x) = 7x+b . In the standard (x,y) co-ordinate plane , y=f {g(x)} passes through (4,6) . What is the value of b ?

Answer 1

Answer:

Step-by-step explanation:f(g(x))=root(7x+b)

and it passes through (4,6) which means we need to take x,y values as 4,6

since the equation is passing through the point

therefore f(g(x))=6

                 root(g(x))=6

                 root(7x+b)=6

                 7x+b=square(6)

                 7x+b=36

                 7*4+b=36

                 b=36-7*4

                  b=8

hence the value of b is 8

Answer 2

The value of b is 9 .