How to do system of equations?

In the case of systems of linear equations in two variables, the most common methods are:

1) substitution

2) elimination

3) graphing

Step-by-step explanation:

If you are referring to linear systems of equations in two variables, there are three very standard methods for solving them. the first two consist of working first in reducing the equations into a single equation with a single unknown to solve for it, by appropriate combinations:

1)  Substitution method (solve for one variable in terms of the other and use its expression to substitute in the second equation)

2) Elimination method (multiply the two equations by the appropriate factors so as to eliminate one of the variables doing term by term addition)

3) Graphing method by looking for the point at which the lines intercept

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step-by-step explanation:

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step-by-step explanation:

f(x)=2x^2 -1 

translation is a function transformation that transform the function in a way of translating. by translating the function its graph is moved  up an down. moving the function f(x) 2 units to the left will be the new function g(x) with the equation: g(x)=f(x+2)=2(x+2)^2 -1