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Consider that an absolute value equation in the form |ax+b|=|cx+d| has two related equations.
x=-5
Now, let's solve each equation separately.
To graph the equation x+1=- x-9, we will create two functions out of the left- and right-hand sides of the equation. y=x+1 and y=- x -9 The x-coordinate where the graphs of these equations intersect is the solution to our equation.
Again, to graph the equation x+1=-(- x-9), we will create two functions out of the left- and right-hand sides of the equation.
x+1=- (- x-9) | |
---|---|
First Function | y=x+1 |
Second Function | y=- (- x-9) ⇔ y=x+9 |
Once more, the x-coordinate where the graphs of these functions intersect is the solution to our equation.
We have found that these lines are parallel, so they will never intersect. Therefore, there is no solution to this equation.
By checking the two related equations of the absolute value equation, we found that the only solution is x=-5.