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3х – Зу = 15Determine if the given ordered pair, (5,4) satisfies the given equation

User Prasad Revanaki
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1 Answer

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25 votes

To determine if the ordered pair (5,4) satisfies the given equation, we just have to replace the x-value 5 into the equation and calculate the y-value, if we get 4, then the given pair satisfies the equation.

3х – Зу = 15

From this equation, we can solve for y to get:

3x - 3x - 3y = 15 - 3x

-3y = 15 - 3x

-3y/-3 = 15/-3 - 3x/-3

y = -5 + x, replacing 5 for x:

y = -5 + 5 = 0

Since we didn't get 4 for y, we can conclude that the pair (5,4) doesn't satisfy the equation

User Ciel
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