Question

Use the substitution method to solve the system of equations. Enter your answer as an ordered pair.

y = 2x + 1 y = 6x - 1

Answer 1

y = 2x + 1

6x-1 = 2x + 1 ... replace y with 6x-1

now solve for x and tell me what you get

Answer 2

1/3

Answer 3

incorrect

Answer 4

6x-1 = 2x + 1

6x-1+1 = 2x + 1+1 ... Add 1 to both sides.

6x = 2x + 2

6x - 2x = 2x + 2 - 2x ... Subtract 2x from both sides.

4x = 2

x = ???

Answer 5

2

Answer 6

x = 2 does NOT make 4x = 2 true

Answer 7

4x = 2

4*2 = 2 ... replace x with 2

8 = 2 ... this is false

Answer 8

Thanks

Answer 9

if 4x = 2, then what must x be?

Answer 10

I don't even know anymore

Answer 11

divide both sides by 4

Answer 12

2/4 = ???

Answer 13

0.5

Answer 14

yep or 1/2

Answer 15

now that you know x = 0.5, you can use this to find y

Answer 16

by plugging that x value into any equation with x & y in it, then solving for y

Answer 17

Thanks

Answer 18

you're welcome