Answer:
y = 4x + 15
Explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
y = 4x + 7 ← is in slope- intercept form
with slope m = 4
Equation of straight line with same gradient is
y = 4x + c
the line passes through the y- axis at (0, 15 ) ⇒ c = 15
y = 4x + 15 ← equation of line