If y is directly proportional to 2 x square and the difference in the value of y when x is equal to 1 and x is equal to 3 is 32 find the value of y when x is equal to minus 2

Step-by-step explanation:

y = 2kx², where k is a real constant.

We have:

2k(1)² - 2k(3)² = 32 or 2k(3)² - 2k(1)² = 32.

=> 2k - 18k = 32 or 18k - 2k = 32

=> -16k = 32 or 16k = 32

=> k = -2 or k = 2.

When x = -2,

y = 2(-2)(-2)² or y = 2(2)(-2)².

=> y = -16 or y = 16.

whole numbers.

step-by-step explanation:

we are given the average monthly rainfall (in millimeters) model r(m) for the years 1900-2009 as a function of the month number m.

as we can see m is taken for the number of months for years 1900-2009.

we know that number of months can't be a negative number or decimal number or a fraction.

so, the number of months could be only positive whole numbers.

therefore, whole numbers is more appropriate for the domain of r.

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step-by-step explanation: