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13 votes
13 votes
Y=-2x-3

y=2x-1

y=x+ 4
y=-x+ 2

y=-2x-3
y= x+ 4

y=2x-1
y=-x+ 2

match with WXYZ

Y=-2x-3 y=2x-1 y=x+ 4 y=-x+ 2 y=-2x-3 y= x+ 4 y=2x-1 y=-x+ 2 match with WXYZ-example-1
User Leena Patel
by
2.6k points

1 Answer

16 votes
16 votes

Explanation:

I don't understand. what are W, C, Y, Z ?

all I can do is solving the 4 systems of equations for x and y.

y = -2x - 3

y = 2x - 1

adding the equations

2y = 0 - 4 = -4

y = -2

-2 = 2x - 1

-1 = 2x

x = -1/2

y = x + 4

y = -x + 2

adding the equations

2y = 0 + 6 = 6

y = 3

3 = x + 4

x = -1

y = -2x + 3

y = x + 4

multiply second equation by 2, add the result to first

2y = 2x + 8

3y = 0 + 11 = 11

y = 11/3

11/3 = x + 4 = x + 12/3

x = -1/3

y = 2x - 1

y = -x + 2

multiply second equation by 2, add the result to first

2y = -2x + 4

3y = 0 + 3 = 3

y = 1

1 = -x + 2

-1 = -x

x = 1

User Jagruti
by
2.5k points