AlgebraEasy–MediumPoint further along a line through two intercepts
Algebra practice question
In the xy-plane, a line passes through (0, −3) and (6, 0). What is the y-coordinate of the point on the line where x = 10?
Answer: 2
The slope is 3/6 = 1/2, so y = x/2 − 3. At x = 10, y = 5 − 3 = 2.
Common wrong answers
- If you answered 7
- 7 adds 3 instead of subtracting.
- If you answered 17
- 17 uses slope 2.
- If you answered -8
- −8 uses slope −1/2.
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