The angle between the positive horizontal axis and a give...
The angle between the positive horizontal axis and a given line is 135°. Find the equation of the line if it passes through the point (2,3)
x - y = 1
x + y = 1
x + y = 5
x - y = 5
Correct answer is C
m = tan 135° = -tan 45° = -1
y−y1x−x1 = m
y−3x−2 = -1
= y - 3 = -(x - 2)
= -x + 2
x + y = 5
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