The Human Skin
Q: The skin helps in temperature regulation. True or False?
Did You Know?
These are parallel lines (same slope 2). The distance between parallel lines ax + by + c₁ = 0 and ax + by + c₂ = 0 is |c₁ - c₂|/√(a²+b²). Rewrite: 2x - y + 1 = 0 and 2x - y - 3 = 0. Distance = |1 - (-3)|/√(4+1) = 4/√5
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