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kupik [55]
3 years ago
7

Solve the system of equations below by graphing both equations with a pencil and paper. What is the solution? y = x + 5 y = –2x

– 1 A. (0, –1) B. (0, 5) C. (–2, 3) D. (–2, –1)

Mathematics
2 answers:
ipn [44]3 years ago
7 0
Look at the picture. Here I have inserted the two functions, the green is the first. Can you find the solution? I also included all the answers.

masha68 [24]3 years ago
6 0

Answer:

C. (–2, 3)

Step-by-step explanation:

Given :

y=x+5\\y=-2x-1

Solution :

Equation a : y=x+5

Equation b : y = -2x-1

We will use substitution method

Putting the value of y from equation a in equation b

⇒x+5 = -2x-1

⇒x+2x= -1-5

⇒3x= -6

⇒x=\frac{-6}{3}

⇒x=-2

Now substituting value of x in equation a to get value of y

⇒y=x+5

⇒y=-2+5

⇒y=3

Thus the solution of given system of equations is (-2,3)

Thus The Option C is correct.

We have also solved it by graphing the equations you can refer the attached figure.


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