Alevel maths modulus question

Can someone please explain why, for part B, the method to work out the points of intersection of Y=|2x+3|-4 and y= -x/4+2 doesn’t include the -4 to Y=|2x+3|-4

Not sure which method it is, but for the absolute value you'd consider the regions where x <= -3/2 and x>=-3/2. In these regions, Y becomes
y = -2x -7
y = 2x - 1
Then proceed to find the (up to) two crossing points with the other line.

Why does part b) of this question equate the equations as
|2x+3|=1/4x+2
And not
|2x+3|-4 = 1/4x+2

Should be $|2x+3| - 4 = -\dfrac{1}{4}x + 2$ to get $x=-6,1.2$

This is what the mark scheme says

Yes it's wrong.

The question should've asked for intersection between $y=|2x+3| - 4$ and $y=-\dfrac{1}{4}x - 2$ in order for the mark scheme to make sense.