SOLUTION: Graphing the system: x + 4 = 11 x -4 = 5

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Question 263992: Graphing the system:
x + 4 = 11
x -4 = 5

Answer by JBarnum(2146)   (Show Source): You can put this solution on YOUR website!
x + 4 = 11
x -4 = 5
solve for x
x=7
x=9
im just doing this part below so i can input the graph
same as x-7=0 x-9=0
(x-7)(x-9)
x^2-16x+63=0 A=1 B=-16 C=63 VIEW the graph below
Solved by pluggable solver: SOLVE quadratic equation with variable
Quadratic equation (in our case ) has the following solutons:



For these solutions to exist, the discriminant should not be a negative number.

First, we need to compute the discriminant : .

Discriminant d=4 is greater than zero. That means that there are two solutions: .




Quadratic expression can be factored:

Again, the answer is: 9, 7. Here's your graph:

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