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The lines x=4y+a and y=4x+b intersect at the point (1,2). What is a+b

 Apr 14, 2022

Best Answer 

 #1
avatar+36433 
+1

Plug in the point given

 

x = 4y+a

1 = 4(2) + a    shows   a = -7

 

y = 4x+b

2 = 4(1) + b

                        b = -2

 Apr 14, 2022
 #1
avatar+36433 
+1
Best Answer

Plug in the point given

 

x = 4y+a

1 = 4(2) + a    shows   a = -7

 

y = 4x+b

2 = 4(1) + b

                        b = -2

ElectricPavlov Apr 14, 2022

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