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SpyIntel [72]
3 years ago
15

Choose the graph that matches the following system of equations: x + y = 4 2x + 3y = 18

Mathematics
2 answers:
Elden [556K]3 years ago
5 0
The equations become y=-x+4 and y=-⅔+18. Because of this, I think the graph is the one in the first attachment and the top graph.
Luden [163]3 years ago
3 0

Answer:

<h3>Graph A is correct.</h3>

Step-by-step explanation:

We are given the system of inequality,

x+y=4\\\\2x+3y=18

Now, it is required to find the graph of the system of equations.

We have the equations,

x + y = 4         ............(1)

2x + 3y = 18  .............(2)

Multiplying (1) by 2 and subtracting the equations gives us,

2x+2y-2x-3y=8-18\\-y=-10\\y=10

Substituting the value of y in any equation, we get,

x + 10 = 4\\x=4-10\\x=-6

Thus, the solution of the system of equations is (-6,10).

As we have that the point (-6,10) will lie in the second quadrant.

So, the graphs of the equations must intersect in the second quadrant.

Moreover, the slope intercept forms of the equations are given by,

y=-x+4

y =\frac{-2}{3}x+6

Thus, the slope of the equations are -1 and \frac{-2}{3}.

Then, the graphs of the equations must be decreasing.

Hence, the correct option is 'Graph A' given below.

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