Identity function

Q. The given graph of linear function shows a relation between a player with his height.


The set of input and output values will be:

1. $\text{Domain:}0\le \text{x}\le 4$
   $\text{Range:}0\le \text{y}\le 7.8$
2. $\text{Range:}0\le \text{y}\le 4$
   $\text{Domain:}7\le \text{x}\le 7.8$
3. $\text{Domain:}0\le \text{x}\le 7.8$
   $\text{Range:}7\le \text{y}\le 4$
4. $\text{Domain:}0\le \text{x}\le 4$
   $\text{Range:}7\le \text{y}\le 7.8$

Q.

How many of the following statements are true about the identity function?

(a) It's graph is shown above.
(b) Domain is R
(c) Range is R
(d) Its an even function

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Q. The given graph of linear function shows a relation between a player with his height.


The set of input and output values will be:

1. $\text{Domain:}0\le \text{x}\le 4$
   $\text{Range:}0\le \text{y}\le 7.8$
2. $\text{Domain:}0\le \text{x}\le 7.8$
   $\text{Range:}7\le \text{y}\le 4$
3. $\text{Range:}0\le \text{y}\le 4$
   $\text{Domain:}7\le \text{x}\le 7.8$
4. $\text{Domain:}0\le \text{x}\le 4$
   $\text{Range:}7\le \text{y}\le 7.8$

Q.

Which of the following is the identity function?

1. $y=1$

2. $y=x^2$

3. $y=|x|$

4. $y=x$

Q. The given graph of linear function shows a relation between a player with his height.


The set of input and output values will be:

1. $\text{Domain:}0\le \text{x}\le 4$
   $\text{Range:}7\le \text{y}\le 7.8$
2. $\text{Range:}0\le \text{y}\le 4$
   $\text{Domain:}7\le \text{x}\le 7.8$
3. $\text{Domain:}0\le \text{x}\le 7.8$
   $\text{Range:}7\le \text{y}\le 4$
4. $\text{Domain:}0\le \text{x}\le 4$
   $\text{Range:}0\le \text{y}\le 7.8$