SOLUTION: if the lines ax - y = 3 and x + 2y = b intersect at point (2,1) then the values of a and b , respectively are

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Question 365489: if the lines ax - y = 3 and x + 2y = b intersect at point (2,1) then the values of a and b , respectively are
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi, 

lines ax - y = 3 and x + 2y = b intersect at point (2,1)

using the ordered pair (2,1)

ax - y = 3

2a - 1 = 3

a = 2

Again, using the ordered pair (2,1)for the second equation

 x + 2y = b

2 + 2 = b

4 = b

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