AlgebraMediumAnother point on a line of slope 3
Algebra practice question
In the xy-plane, a line with slope 3 passes through the point (1, 1). Which of the following points also lies on the line?
- A. (3, 7)Correct
- B. (7, 3)
- C. (2, 3)
- D. (0, 2)
Answer: A. (3, 7)
From (1, 1), moving 2 to the right raises y by 6, to (3, 7).
Why the other answers are wrong
- B. (7, 3)
- The coordinates are swapped.
- C. (2, 3)
- Moving 1 right should raise y by 3, to 4.
- D. (0, 2)
- Moving 1 left should lower y by 3, to −2.
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