SAT Linear equations in two variables Practice Question 3 (Easy)

Question bank / Linear equations in two variables

Math · AlgebraEasy

In the $xy$ -plane, the graph of $5x - 2y = 20$ crosses the $y$ -axis at the point $(0, b)$ . What is the value of $b$ ?

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Answer: -10

On the $y$ -axis, $x = 0$ . Substitute: $-2y = 20$ , so $y = -10$ .

Forgetting the negative sign on $-2y$ gives 10.

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