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Question 511 Mark

Tell whether the given relat is a function or not? Justify : R = {(1, 2),(2, 3),(3, 4), (4, 5), (5, 6), (6, 7)}

Answer

Since every element has one and only one image, therefore this relation is a function.

Question 521 Mark

Tell whether the given relation is a function or not? Justify : R = {(2, 2),(2, 4),(3, 3), (4, 4)}

Answer

Since the same first element 2 corresponds to two different images 2 and 4, therefore, this relation is not a function.

Question 531 Mark

Tell whether the given state is a function or not? Justify your answer.
R = {(2,1),(3,1), (4,2)}

Answer

R = {(2,1),(3,1), (4,2)}
Here we have, Since 2, 3, 4 are the elements of domain of R having their unique images, this relation R is a function.

Question 541 Mark

If (x + 1, y – 2) = (3, 1), find the values of x and y

Answer

Since the ordered pairs are equal, the corresponding elements are equal.Then,we have,
x + 1 = 3 and y – 2 = 1
Solving we get x = 2 and y = 3

1 Marks Question - Page 2 - Maths STD 11 Science Questions - Vidyadip

Maths 1 Marks Question