It be D i think i hope this helps
Answer:
D) y = 3x
Step-by-step explanation:
y = 3x is correct. Each y-value is triple the corresponding x-value.
x=5 y=-6
3x+y=9 ------eqn1
y=4-2x -------eqn2
using substitution
put y=4-2x into eqn1
3x+4-2x=9
x=5
put x=5 into eqn2
y=4-2(5)
y=4-10
y=-6
