draw the graph of linear equation x+2y=8.From the graph check whether (-1, -2) is the solution of this equation..
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A linear line must not have any curves at all in the graph . The way to tell if an equation is linear is by using y = mx + b. M and b can stand for any number as long it stays the same number for one equation. If the equation has a structure like this, then the equation is always linear.
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