Answer:
y = 6x + 9
Explanation:
The slope-intercept form of an equation of a line:

m - slope
b - y-intercept → (0, b).
Parallel lines have the same slope.
Therefore if k: y = 6x + 7 → m = 6, and l: y = mx +b,
then l is parallel to k if m = 6.
We have the equation: y = 6x + b.
The line l passes through (0, 9). Therefore b = 9.
Finally we have:
y = 6x + 9