-x+y=12
is the equation of a line and since there are infinitely many points on the line and each point is represented by an ordered pair, we have infinitely many solutions.
If we take x as 0, then y must be 12
so (0,12) is one ordered pair that is a solution to the equation.
Zero is often a nice number to pick since it makes the calculation a bit easier.
7
-1
(0, 6.5) is one option.
It is a simultaneous equation and its solution is x = -1 and y = -5
There are infinitely many ordered pairs tat are solutions. They are all points on the line represented by 5x-6y = 13
7
(10, 2)
y=(-1) x=(2)
(0,7)
(2,3)
Do you mean: 4x+7y = 47 and 5x-4y = -5 Then the solutions to the simultaneous equations are: x = 3 and y = 5
x = -3/5 and y = -24/5
The ordered pair is (1, 3).
No solution
When (the graph of the equations) the two lines intersect. The equations will tell you what the slopes of the lines are, just look at them. If they are different, then the equations have a unique solution..
15
-1