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A system of equations is graphed on a coordinate plane.

Which coordinates are the best estimate of the solution to the system of equations?

A) (-1, 0)
B) (-1, -1)
C) (1, 0)
D (1, -1)

A system of equations is graphed on a coordinate plane Which coordinates are the best estimate of the solution to the system of equations A 1 0 B 1 1 C 1 0 D 1 class=

Respuesta :

The solution of this system of equations is the point of cut of these line.

Point of cut is when x is close to -1, and y is close to 0; therefore the best estimate of the solution would be:

A) (-1,0)

We can check it out our answer solving the system of equations:
-3x+y=2
-4x+7y=1

We solve this system by substitution method. 
-3x+y=2   ⇒  y=2+3x

-4x+7(2+3x)=1
-4x+14+21x=1
-4x+21x=1-14
17x=-13
x=-13/17=-0.764....≈-1

y=2+3x
y=2+3(-0.764)
y=2-2.292
y=-0.292≈0

The approximate solution will be (-1,0)




nadiaallen23

Answer:

The answer is A: (-1, 0)

I took the test and this was the correct answer.

Good luck

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