Question

Solution of linear equations x-y=0 , 8x+y=9 is
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Answer 1

Answer:

answer must be y=1and x=1

Step-by-step explanation:

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Answer 2

Answer:

System of Linear Equations entered :

[1] 8x - y = 0

[2] x + y = 9

Graphic Representation of the Equations :

y + 8x = 0 y + x = 9

Solve by Substitution :

// Solve equation [2] for the variable y

[2] y = -x + 9

// Plug this in for variable y in equation [1]

[1] 8x - (-x +9) = 0

[1] 9x = 9

// Solve equation [1] for the variable x

[1] 9x = 9

[1] x = 1

// By now we know this much :

x = 1

y = -x+9

// Use the x value to solve for y

y = -(1)+9 = 8

Solution :

{x,y} = {1,8}