____13. Which of the following is NOT an example of a linear inequality in two variables?

A. 4x + y < 1
B. y ≤ 6x + 11
C. 2y ≥ x - 5
D. x + 6y =7

____14. Which of the following in the standard form of linear inequality in two variables?

A. 6x + y < 5
B. y ≤ 4x + 1
C. 5y ≥ x - 3
D. 7x + 6y =7​