Geometryhard · Past Paper
The distance between the lines 3x + 4y = 9 and 6x + 8y = 15 is:
A3/10
B6/5
C3/5
D0.3
✓ Correct Answer: A — 3/10
Rewrite second as 3x + 4y = 7.5. Distance = |c1 - c2| / sqrt(A^2 + B^2) = |9 - 7.5| / 5 = 1.5 / 5 = 0.3 or 3/10.
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