Question

Is (2, 1) a solution to the equation y = 2x - 1?

Answer 1

No

Explanation:

Substitute the values for their respective variable and evaluate.

`1=2(2)-1\\1=4-1\\1\\eq 3`

Therefore, (2, 1) is not a solution to the equation y = 2x - 1.

Answer 2

(2, 1) is in the form of (x, y).

Then,

☆ x = 2

☆ y = 1

Equation =》y = 2x - 1

Now, substitute the values.....

=》y = 2x - 1

=》(1) = 2(2) - 1

=》1 = 4 - 1

=》 1 ≠ 3

So, (2, 1) is NOT a solution to the equation y = 2x - 1.

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Hope it helps ⚜