AlgebraMediumDistance from an intersection point to the x-axis
Algebra practice question
In the xy-plane, the lines y = x + 2 and y = 3x − 4 intersect at point P. What is the distance from P to the x-axis?
Answer: 5
x + 2 = 3x − 4 → x = 3, y = 5. The distance from (3, 5) to the x-axis is its y-coordinate, 5.
Common wrong answers
- If you answered 3
- 3 is the distance to the y-axis.
- If you answered 8
- 8 is 3 + 5.
- If you answered 5.83
- 5.83 is the distance to the origin.
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