Question

6. All identity functions are
any to one
d) Non of these
b) into c) bijection d) non of these
5. if g ={(1.1)(2,3)(3.5).(4.7) is a function given by g (x)= (ax) +B then the value of a and B are
a)(-1,2) b) (2,-1) c) (-1,-2) d) (1,2)​

Answer 1

6. All identity functions are bijective.

5. g(x)= ax + b

Now g(1)=1
a + b = 1 .......(1)

Also, g(2)=3
2a + b = 3........(2)

Subtract (1) from (2)

we get a = 2

Put a = 2 in (1)
2 + b = 1
b = - 1

Option (b) is correct

Answer 2

Answer:

the above ans is correct..........