Which relation is a function of x?
1 {(1,2), (7, 6), (3, 2), (1, 0), (5, 6)}.
3. x=3y²–7

9514 1404 393

  The given graph shows a function of x.

Step-by-step explanation:

Neither 1 nor 3 is a single-valued relation for some values of x. The graph shown passes the vertical line test, so does represent a function.

The graph is a relation that is a function of x.

___

The attached graph is of the equation of 3. A vertical line will intersect the graph in more than one place, so the relation is NOT a function.

The definition of variability in math is, basically, the extent of which certain points of data diverge from normal or average. According to this, the intequartile range would be the most helpful in determining the variability in chapter length. Also, the Range and Median would be helpful, to a much smaller extent though.