AlgebraEasy–MediumIntercept of a line in standard form
Algebra practice question
The line 2x + 5y = 16 is graphed in the xy-plane. What is the x-coordinate of the point where the line crosses the x-axis?
Answer: 8
On the x-axis, y = 0: 2x = 16, so x = 8.
Common wrong answers
- If you answered 16
- 16 is the constant, not the intercept; divide by the coefficient 2.
- If you answered 3.2
- 3.2 is the y-intercept (16 ÷ 5), found by setting x = 0.
- If you answered -8
- −8 has the wrong sign.
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