IDNStudy.com, kung saan ang kuryusidad ay nagtatagpo ng kalinawan. Magtanong at makakuha ng detalyadong sagot mula sa aming komunidad ng mga eksperto na may kaalaman.

4. All of the following are true, EXCEPT.
A. The boundary line of y> 2x +3 is a solid line.
B. The boundary line of x + 3y <or =5 is a solid line.
C. 2x + y > or = 1 is a linear inequality.
D. (1, 1), is a solution of x+y> 1​