Question

Solve the following systems of inequalities and select the correct graph:

2x − y > 4
x + y < −1

Answer 1

We can replace the inequality with qual sign:
2x - y = 4
x + y = -1
We can combine both question
3x = 3
x = 1
Since we know x = 1, we can solve for y by plug in in either equation:
x + y = -1
1 + y =-1
y = -2
or
2x - y = 4
2(1) - y = 4
-y = 2
y = -2

So the solution of this system of equation is the coordinate (1, -2)