Asked by salome
Given the points A(1,7),B(7,5) and C(0,-2).
(i)Find the equation of the perpendicular bisector of AB
(ii)Find the slope of BC
(i)Find the equation of the perpendicular bisector of AB
(ii)Find the slope of BC
Answers
Answered by
Henry
A(1,7), M(x,y), B(7,5), C(0,-2).
1. x = (1+7) / 2 = 4.
y = (7+5) / 2 = 6.
m1 = (5-7) / (7-1) = -1/3.
m2 = -(-3/1) = 3. = Negative reciprocal of mi.
Y = mx + b.
3*4 + b = 6.
b = -6.
Eq: Y = 3x - 6.
2. m = (-2-5) / (0-7) = 1.
1. x = (1+7) / 2 = 4.
y = (7+5) / 2 = 6.
m1 = (5-7) / (7-1) = -1/3.
m2 = -(-3/1) = 3. = Negative reciprocal of mi.
Y = mx + b.
3*4 + b = 6.
b = -6.
Eq: Y = 3x - 6.
2. m = (-2-5) / (0-7) = 1.
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