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If x and y are integers, and 4x + 5y = 19, which of . . .

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by [email protected] » Tue Dec 26, 2017 8:51 am
Hi Vincen,

We're told that X and Y are integers, and 4X + 5Y = 19. We're asked which of the following COULD be the value of X.

This question is perfect for TESTing THE ANSWERS - one of those numbers MUST be a solution to the given equation (note: we're told that BOTH variables are INTEGERS, so when you TEST a value for X, the corresponding value of Y must also be an integer). When you plug-in a value of X and find the corresponding Y or plug in the Y and find the corresponding value for X, the equation is relatively "small", so it shouldn't take too long to do the basic arithmetic and find the solution.

Final Answer: A

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by Scott@TargetTestPrep » Thu Sep 05, 2019 5:12 am
Vincen wrote:If x and y are integers, and 4x + 5y = 19, which of the following could be the value of x?

A. 1

B. 2

C. 3

D. 4

E. 5

The OA is the option A.

The way to solve this PS question is replacing the values in x? Is there another way to solve it?
If x = 1, then y = 3 will satisfy the equation 4x + 5y = 19.

Answer: A

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