Hello, Ysla,
The slope intercept form of an equation is y = mx + b, where m is the slope and b is the y intercept.
We are given the slope (14) [Did you mean to write 1.4?], so we have:
y = 14x + b
To find b, just use the point provided to solve the equation for b, since we know it is on the line.
(0,6): 6 = 14(0) + b
b = 6
The equation is y = 14x + 6
Bob