Asked by Rox
The lines x=4y−a and y=4x−b intersect at the point (1,2). What is a+b?
Answers
Answered by
Henry
X = 4y-a = 1
4*2 - a = 1
a = 7.
Y = 4x - b = 2
4*1 - b = 2
b = 2.
a + b = 7 + 2 = 9.
4*2 - a = 1
a = 7.
Y = 4x - b = 2
4*1 - b = 2
b = 2.
a + b = 7 + 2 = 9.
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