Question

Solve this system of equations using substitution. Put your answer in ordered pair form, (x, y).
x - 2y = -1
2x - y = 4

Answer 1

x - 2y = -1
2x - y = 4

Answer 2

Plug in a made up value for one of the variables to figure out what the other would be to make the equation valid. For example, if you set y to equal 1, then x has to equal 1, because 1 minus 2 equals -1.

Answer 3

need help fast

Answer 4

if y equaled 2, x would have to equal 5 to satisfy the equations parameters, and those x and y values you achieve are your coordinates.

Answer 5

x=11 , y=6.

Answer 6

11,6 is not the answer

Answer 7

rewrite the first to x = -1+2y
and inset in the second 2(-1+2y)-y=4
and solve
-2+4y-y = 4
-2+3y=4
3y = 4+2
y = 6/2
y=3
x = -1+2y
x=-1+2*3
x = 5

Answer 8

what is the answer?

Answer 9

x = 5, y = 3

Answer 10

5,3 is not the answer

Answer 11

sry 6/3
y = 2
x = 3

Answer 12

rewrite the first to x = -1+2y
and inset in the second 2(-1+2y)-y=4
and solve
-2+4y-y = 4
-2+3y=4
3y = 4+2
y = 6/3
y=2
x = -1+2y
x=-1+2*2
x = 3

Answer 13

x-2y=-1 /2
2x-y=4

2x-4y=-2
2x-y=4
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-- -3y=-6
y=-6/-3= 2
than y=2 --- 2x-2=4 --- 2x=6 --- x=6/2 =3

x=3
y=2