Answer:
y=x+2
Explanation:
Im going to start by presuming its a linear equation so the formula is:
y=mx+n so now we just make a simulanious equation:
7=5m+n
4=2m+n
which we subtract to get
3=3m
m=1
then we plug it into the first equation
7=5+n
n=2
so the equation is:
y=x+2