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What is the system is equations 5x+4y=8 2x-3y=17

User Tpett
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1 Answer

6 votes

Answer:

(4, -3)

Explanation:

The system of equations can be described a number of ways. One possible description is "a consistent pair of linear equations in two variables."

Perhaps you want to know the solution to this system of equations. I find it easiest to graph them. The attached graph shows the solution to be ...

(x, y) = (4, -3)

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You can also use "elimination" to simplify the system to a single equation in a single variable. Adding 4 times the second equation to 3 times the first will do that.

3(5x +4y) +4(2x -3y) = 3(8) +4(17)

23x = 92 . . . . . simplify

x = 4 . . . . . . . . divide by 23

Substituting this value into the first equation, we have ...

5(4) +4y = 8

5 +y = 2 . . . . . . divide by 4

y = -3 . . . . . . . . subtract 5

The solution is (x, y) = (4, -3).

What is the system is equations 5x+4y=8 2x-3y=17-example-1
User Jalanb
by
5.3k points
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