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Which of the following is a solution to the equation y = 3x – 1?

A. (4, 1)
B. (2, 5)
C. (4, 3)
D. (0, –3)

1 Answer

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Final answer:

Option B (2, 5) is the correct solution to the equation y = 3x - 1 since plugging in the x-value 2 into the equation results in the y-value 5.

Step-by-step explanation:

The correct answer is option B. This option can be verified by substituting the x-value of the ordered pair (2, 5) into the equation y = 3x - 1. By multiplying the x-value by 3 and then subtracting 1, we get:

3(2) - 1 = 6 - 1 = 5

The resulting y-value is 5, which matches the y-value of the ordered pair. Hence, option B (2, 5) satisfies the equation. None of the other options produce the correct y-value when their respective x-values are plugged into the equation.

To determine if a point is a solution to an equation, substitute the values of x and y from the point into the equation and check if it is true.

For option A, we have y = 3(4) - 1 = 12 - 1 = 11. Since y does not equal 11, this point is not a solution to the equation y = 3x - 1.

For option B, we have y = 3(2) - 1 = 6 - 1 = 5. Since y equals 5, this point is a solution to the equation y = 3x - 1.

For option C, we have y = 3(4) - 1 = 12 - 1 = 11. Since y does not equal 11, this point is not a solution to the equation y = 3x - 1.

For option D, we have y = 3(0) - 1 = 0 - 1 = -1. Since y equals -1, this point is a solution to the equation y = 3x - 1.

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