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Solve the system of equations y = x + 7 and 2x + y = 10 using a graphical method. SOMEONE PLEASE HELP MEEEEEE!!!!!

A) (0, 5)
B) (1, 8)
C) (8, 1)
D) (17, 24

2 Answers

2 votes

The answer to this question is B, (1, 8).

Hope this helped!

User Jenz
by
5.4k points
3 votes

Answer:

B). (1,8)

Explanation:

You can build graphical using both equation

  1. y=x+7
  2. y=-2x+10

1. When
y=0, so
x=-7 and when
x=0, so
y=7

2. When
y=0, so
x=5 and when
x=0, so
y=10

So in the image graphic 1 is red and graphic 2 is blue and you can see they cross at (1,8)

To check

1=2 so,
x+7=-2x+10 \\ 3x=3 \\ x=1

Replacing:

1. y=1+7=8 and 2. y= -2*1 +10=8

So (1,8)

Solve the system of equations y = x + 7 and 2x + y = 10 using a graphical method. SOMEONE-example-1
Solve the system of equations y = x + 7 and 2x + y = 10 using a graphical method. SOMEONE-example-2
User Kcent
by
5.8k points