What is the area (in square units) of the triangular region enclosed by the graphs of the equations x + y = 5, 3x + 5y = 21 and the x-axis?
1
5 cm2
2
8 cm2
3
3 cm2
4
6 cm2
What is the area (in square units) of the triangular region enclosed by the graphs of the equations x + y = 5, 3x + 5y = 21 and the x-axis?