The answer is y=2x+7
Since the line is parallel to a line that has a slope of 2, the slope of the line is also 2. Since parallel lines have the same slope.
To find the y-intercept, you have to substitute the point into the slope intercept form.
y=mx+b
(-3,1)
1=2(-3)+b
1=-6+b
Add 6 to both sides
7=b