AlgebraEasyWhere a graph meets the x-axis
Algebra practice question
The equation 3x + 2y = 12 is graphed in the xy-plane. What is the x-coordinate of the point where the graph meets the x-axis?
Answer: 4
On the x-axis, y = 0: 3x = 12, so x = 4.
Common wrong answers
- If you answered 0
- 0 is the y-coordinate of that point.
- If you answered 6
- 6 is the y-intercept (x = 0 gives 2y = 12).
- If you answered 12
- 12 forgets to divide by 3.
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