Answer:
only -7
Step-by-step explanation:
Just plug them in.
so for x=-7 So this one is extraneous
Then if you plug -3 in you get 1 = 1 so this one is not extraneous. if you need me to work this one out let me know.
I'm pretty sure it's y= 1/3x + 2
7000
you round it up as it is above 6500