Solve the following systems of inequalities graphically then give three ordered pairs satisfying the inequalities. Show that the ordered pairs satisfy the inequalities.
Given that,
Write the given inequality in equation form,
Equation (1),
When x = 0, y=-3,
When y = 0,
Equation (1) passes through (0, -3) and (0.75, 0).
Equation (2),
When x = 0, y = 3
When y = 0,
Equation (2) passes through (0, 3) and (1.5, 0).
Subtracting (1) from (2),
Substitute x = 1 in (1),
So intersection point of (1) and (2) is (1, 1).
Now take three points (1, 6), (0, 4) and (2, 7).
Substitute these three points in given inequality,
At (1, 6),
At (0, 4),
At (2, 7),
Hence these three points (1, 6), (0, 4) and (2, 7) satisfy the given inequality.
Graph:
[Shaded region represents the solution set of given equality included (1, 6), (0, 4) and (2, 7)]