Answer:
See below
Step-by-step explanation:
The function
oscillates between -1 and 1, so the range is
.
This gives you, 4x + 5y = -25 as your final answer.
Hope this helps! Good luck!
It's been such a long time, but I think (1) should be the addition property since your adding 5 to both sides.
And (2) should be the multiplication property due to multiplying both sides by 2.