2x - 3 = 7
Again, p represents the quantity within the absolute value bars thus all we have to do here is plug into the formula & then solve the two linear inequalities.
2 x - 3< -7 or 2 x - 3 > 7
2 x <-4 or 2 x >10
x < -2 or x > 5
The interval notation for these are ( -∞, -2) or (5, ∞ ) .
Okay, we next need to take a quick look at what happens if b is zero or negative. We'll do these with a set of examples and let's start with zero.