Asked by lindsay
The points A=(1,1) B=(3,4) connects to point C (3,1).
a. Find the length of AB
b. The gradient and equation of line AB
a. Find the length of AB
b. The gradient and equation of line AB
Answers
Answered by
HenrComp./yr * 5yrsy
Given: A(1,1) B(3,4), C(3,1).
a. (AB)^2 = (3-1)^2 + (4-1)^2 = 13
AB = sqrt13.
b. m = (4-1) / (3-1) = 3/2.
Y = mx + b
1 = (3/2)*1 + b
b = 1-3/2 = -1/2.
Eq: Y = (3/2)x - 1/2.
a. (AB)^2 = (3-1)^2 + (4-1)^2 = 13
AB = sqrt13.
b. m = (4-1) / (3-1) = 3/2.
Y = mx + b
1 = (3/2)*1 + b
b = 1-3/2 = -1/2.
Eq: Y = (3/2)x - 1/2.
Answered by
Henry
Henry
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