Which relation does not represent a function? a) a vertical line b) y = 5 9 x - 3 c) a horizontal line d)

A) a vertical line.

Step-by-step explanation:

We use the vertical line test to determine whether a graph of a relation is a function or not.

The graph of a vertical line will not pass the vertical line test.

Hence a vertical line does not represent  a function.

The graph of  y=59x-3 will pass the vertical line test.

A horizontal line will also pass the vertical line test.

d. 24+-0.114

step-by-step explanation:

the question requires us to calculate the approximate 95% confidence interval for the mean number of ounces of ketchup per bottle in the sample given the following statistics;

sample mean = 24

standard deviation, σ = 0.4

sample size , n = 49

the confidence interval for a population mean is calculated using the formula;

sample mean ± z-score*(σ/sqrt(n))

the z-score associated with a 95% confidence interval, from the standard normal tables, is;

1.96

substituting these values into the formula;

24 ± 1.96*(0.4/7)

= 24 ± 0.112

from the alternatives given, choice d is closest to the above expression;