Question

Choose the point which is a solution to the system of inequalities:

y ≤ –x + 7
y < 3x + 11

A (5, 5)
B (–5, 5)
C (–5, –5)
D none of the above

Answer 1

5<=-5+7 5<15+11
5<=2 not true 5<26 true not a solution

5<=5+7 5<-15+11
5<=12 true 5<-4 not true not a solution

-5<=5+7 -5<-15+11
-5<=12 true -5<-4 true C(-5;-5) is a solution :D