We can rewrite the equation for this line as follows:
7x + 5y = -20
5y = -7x - 20
y = (-7/5)x - 4
Now, let's look at the general equation of a line:
y = ax + b.
In this equation, a is the slope of the line.
All parallel lines to this one will have the same slope. So, we need to identify the slope of the given equation. And that is:
a = -7/5 = -1.4
Therefore, all equations in the form y = -1.4x + c, where c is a constant, represent lines parallel to the given one.
