The equation of a line is:
y = mx + b
where m is the slope of the line and b is the y-intercept. We want a line that's parallel to y = 5x + 4. Parallel lines have the same slope, so our line must have a slope of 5. We also want the same y-intercept as y = 3x - 2. The y-intercept is -2, so our line also has a y-intercept of -2:
y = 5x - 2