CAHSEE Math 4.2 Algebra I

Algebra I Drill 4, Problem 2. Which of the following points is on the line 5x - 2y = 30?

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We’ll start with A. We have 5 times 4, which is 20… minus 2 times negative 5, which is

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negative 10… so 20 minus negative 10 is… 30. And uh – yeah. Wow that was fast.

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Our answer is A. As in, "Already done."