Consider the following equation.

Question

2x+4y=12

Determine the missing coordinate in the ordered pair (−4,?) so that it will satisfy the given equation

Answer 1

The ordered pair (-4,?) asks the question when x = -4, what is the value of y?

2(-4) + 4y = 12 (substitute -4 for x in the given equation)

-8 + 4y = 12

4y = 20 (add 8 to both sides)

y = 5 (divide both sides of equation by 4)

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