Question

Solve algebraically y = - x - 2 y = - 2x

Answer 1

Solving algebraically we get x=2 and y=-4

Step-by-step explanation:

We need to solve the equations:

$y=-x-2\\y=-2x$

Solving and finding value of x and y

Let:

$y=-x-2\,\,eq(1)\\y=-2x\,\,eq(2)$

Subtract both equations

$y=-x-2\\y=-2x\\-\,\,\,\,+\\------\\0=x-2\\x=2$

Putting value of x in eq(1) and find value of y:

$y=-x-2\\y=-2-2\\y=-4$

So, value of y is -4

Solving algebraically we get x=2 and y=-4

Keywords: System of equations

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