Question

Graph the following linear system to determine the number of solutions.

y equals negative three x plus six, six x plus two y equals twelve

zero
1
2
infinitely many

Answer 1

you just asked this didn't you ?

Answer 2

yea but no has answered

Answer 3

so if u know this can u help me plzzz

Answer 4

I answered the last one....the answer is infinite solutions

Answer 5

wat answer is that one for this one or the other one that is :Graph the following linear system to determine the number of solutions.

y equals negative x plus two, x plus y equals five

zero
1
2
infinitely many

Answer 6

y = -2x + 2 --> rearrange to be 2x + y = 2
x + y = 5

now we have :
2x + y = 2
x + y = 5 -->(-1)
---------------
2x + y = 2
-x - y = -5 (result of multiplying by -1)
----------------add
x = -3

now sub -3 in for x in either of the original equations
x + y = 5
-3 + y = 5
y = 5 + 3
y = 8

check...
2x + y = 2
2(-3) + 8 = 2
- 6 + 8 = 2
2 = 2 (correct)

This system of equations has 1 solution ... (-3,8)