Step-by-step explanation:
The given line equation is,

The general slope intercept form of straight line is,

where,
m = slope,
c = y intercept.
Comparing this with the given equation, we get
slope = 3, y intercept = -7
As slope is positive, the function f(x) increases as we increase x and vise versa.
y intercept is the point where the graph intersects the y axis, so the line intersects the y axis at y= -7.