X - 2y = - 9
7x + 2y = 1
x - 2y = - 9
(+)
7x + 2y = 1
___________
8x = - 8
x = - 1
- 1 - 2y = - 9
2y = 8
y = 4
i am a mathematics teacher. if anything to ask please pm me
The answer is the graph has a relative maximum
Answer:
Step-by-step explanation:
divide the number then add on
x>7
Step-by-step explanation:
when dividing by a (-)
the inequality sign changes
