Question

Determine if the solution set for the system of equations shown is the empty set, contains one point or is infinite.
x + y = 5
x + y = 7

Answer 1

Hi

Answer 2

http://openstudy.com/study#/updates/5306b13ae4b00fb1e237459c

Answer 3

Lyre help me toooooooo

Answer 4

Using normal substitution, or something from linear algebra (gauss-jordan elimination or determinant)?

Answer 5

@feishdawwn

Answer 6

Then I'll just do the most simple one:
1.
x + y = 5 => y = 5 - x
x + y = 7

x + 5 - x = 7 <=> 5 = 7 this is invalid and thus we have an empty set.