10th Samacheer Quiz

Q1. If f(x)=2x−3, find f(5).

5 7 8 10

Q2. If f(x)=2x and g(x)=x+3, find (f∘g)(2).

8 10 12 14

Q3. If f(x)=x+1 and g(x)=2x, find (g∘f)(2).

4 5 6 8

Q4. What is the slope of the function y=2x−5?

−5 −2 2 5

Q5. If A has 3 elements and B has 2 elements, find n(A × B).

5 6 8 9

Q6. Which value is excluded from the domain of f(x)=1/(x−2)?

0 1 2 3

Q7. If f(x)=2x+1, what is f(3)?

5 6 7 8

Q8. If A={1,2,3} and B={2,3,4}, what is A∩B?

{1,2} {2,3} {3,4} {1,4}

Q9. In a function, how many outputs must correspond to each input?

0 Exactly 1 At least 2 Any number

Q10. If f(x)=x², find f(-2).

-4 -2 2 4

Relations and Functions