Question

What is the value of the x variable in the solution to the following system of equations?

4x + y = 8
x − 2y = 2

0

2

There is no x value as there is no solution to this system

x can be any value as there are infinitely many solutions to this system

Answer 1

since the equations arent scalars of each other, I dont see them being none and all

Answer 2

if we scale the 1st one by 2 we can eliminate our y variables and sove for x

Answer 3

9x = 18 ... and that is more solvable if i did it right in me head

Answer 4

we could also do a cramer rule; if we need the practice :)

Answer 5

x = (2(1)+8(2))/(1(1)+4(2)) = 18/9