Which equation is a function of x?
x=5
x=y^2+9
x^2=y
x^2=y^2+16

 The answer is (c) x² = y.

Step-by-step explanation: We are given four options out of which we are to select the one which is a function of 'x'.

To be a function of 'x', the equation must involve 'y to the power 1' only.

The first option is

which is constant and so this option is incorrect.

The second option is

which is incorrect because it involves y².

The third option is

which is correct because it involves a single power of y.

The fourth option is

which is also incorrect because it involves y².

Thus, (c) x² = y is the correct option.

3/4 ÷ 3/4

step-by-step explanation:

basically divide any proper fraction with itself to fit the criteria.

so if we are using 3/4, then:

3/4 ÷ 3/4 = 1

so 1 is the quotient.

and the numerators for both these fractions is 3.   and if we divide the numerators:

3 ÷ 3 = 1

we see that quotient is equal to our original quotient as well.

an advantage of the standard deviation is that it increases as the dispersion of the data increases. e. the interquartile range is preferred when the data are not skewed or no have outliers. an advantage of the standard deviation is that it uses all the observations in its computation.