SAT Linear equations in two variables Practice Question 5 (Easy)

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Question bank / Linear equations in two variables

Math · AlgebraEasy

The point $(k, 5)$ lies on the line $y = 2x - 3$ in the $xy$ -plane. What is the value of $k$ ?

$1$

$7$

$13$

$4$

Show answer and explanation

Answer: D

Substitute $x = k$ and $y = 5$ : $5 = 2k - 3$ . Add 3: $2k = 8$ , so $k = 4$ .

Choice B substitutes 5 for $x$ instead of $y$ .

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