Answer:
Which are equivalent expressions?
Check all that are true.
y + x = 2x
x + x + x + x = 4x (true)
x + x = 2x (true)
x + y + y + x = 2x + 2y (true)
x + y + x + x = 2x + y
Step-by-step explanation:

and surely you'd know what the roots are
Answer:
c
Step-by-step explanation:
Yes it is linear since it's in the standard form Ax+By = C
A = 2
B = -8
C = 16