Step-by-step explanation:
there is no big "trick" involved.
you just need to do the multiplication and then move the terms into the right spot, so that the x-, y- and constant terms are in the same place as the generic Ax + By = C
y + 5 = 4(x + 1)
y + 5 = 4x + 4
-4x + y = -1
or (after multiplying both sides by -1)
4x - y = 1
yes, B = 1 (or -1), so you could write 1y (or -1y) instead of only y (or -y).
but nobody does that.
Answer:

Step-by-step explanation:
Since we know that the line starts at (0,0), it goes up by 2 and goes 0.5 to the left. I hope this was helpful & if it is correct.
$30 because if you add 30 to those numbers it would give you the next months amount.
Answer:
DEF is 90° because it is a right angle
Answer:
The sum of the remaining angles would be 220°.