Answer:
the answer y=2x-1
Explanation:
since the gradients of equations that are parallel are the same the equation is y=2x + something. we get the something by using substitution.
The 4 is the x and the 7 is the y value.
c will be the something
so it will be 7=2(4)+ C
7=8+C
7-8=c
-1=C