AlgebraVery hardSlope from an equation with unknown coefficients
Algebra practice question
In the xy-plane, the line ax + by = 0 passes through the point (6, 4), where a and b are nonzero constants. What is the slope of the line?
Answer: 2/3
A line through the origin and (6, 4) has slope 4/6 = 2/3.
Common wrong answers
- If you answered 4
- 4 is the y-coordinate of the point.
- If you answered 3/2
- 3/2 inverts the slope.
- If you answered -2/3
- −2/3 has the sign wrong.
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