Answer: 5
Step-by-step explanation:
We have the equation of the line is of the form
.
Substituting in the coordinates (12,3), we get that:

(-3,7)
what ever the reflecting axis is, the other coordinate gets multiplied by -1
Answer:
Measure of central tendency is a value that represents a typical, or central, entry of a data set. The most common measures of central tendency are: • Mean (Average): The sum of all the data entries divided by the number of entries. ... The standard deviation measure variability and consistency of the sample or population.
Step-by-step explanation: