Algebra
posted by Vilma on .
I have major issues with problems like these,please I need help.
For these systems of linear equations in questions
Determine how many solutions exist
Use either elimination or substitution to find the solutions (if any)
1. y = 2x + 3 and y = x  4
2. 2x + 3y = 8 and 3x + 2y = 7
3. x + y = 3 and y = x + 3

as long as the slopes are different, there will be exactly one solution. That is true for all three of these pairs, with solutions
(7/3,5/3)
(1,2)
(0,3)