2.01 Functions and relations
Adaptive
Worksheet
Interactive practice questions
Which table represents a function?
| $x$x | $y$y |
|---|---|
| $-4$−4 | $5$5 |
| $2$2 | $4$4 |
| $1$1 | $2$2 |
| $1$1 | $1$1 |
A
| $x$x | $y$y |
|---|---|
| $3$3 | $-4$−4 |
| $2$2 | $-3$−3 |
| $1$1 | $-1$−1 |
| $2$2 | $0$0 |
B
| $x$x | $y$y |
|---|---|
| $2$2 | $1$1 |
| $2$2 | $3$3 |
| $2$2 | $5$5 |
| $2$2 | $7$7 |
C
| $x$x | $y$y |
|---|---|
| $-1$−1 | $2$2 |
| $0$0 | $1$1 |
| $1$1 | $2$2 |
| $2$2 | $3$3 |
D
Easy
< 1min
The pairs of values in the table represent a relation between $x$x and $y$y. Do they represent a function?
Easy
< 1min
The pairs of values in the table represent a relation between $x$x and $y$y. Do they represent a function?
Easy
< 1min
Find a value of $k$k such that the relation $\left\{\left(6,2\right),\left(8,5\right),\left(1,7\right),\left(k,4\right)\right\}${(6,2),(8,5),(1,7),(k,4)} does not represent a function.
Medium
< 1min
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