The y-axis is behaving like a mirror in the graph.
If you stand at where ABCD is and a mirror is placed along the y-axis, your image will be at where A'B'C'D' is.
Therefore this is a reflection in the y-axis or in the line

For reflection in the y-axis, we negate the x-coordinates.
The rule for this reflection in the y-axis is
Answer:
y = -7
Step-by-step explanation:
If x equals -14 then you would plug it in and the equation would be -2(-14)-3y=49
The new equation would be 28-3y=49
Then you would subtract 28 from both sides and get -3y=21
Lastly you would divide both sides by -3 and get y=-7
The answer is A. You need an additional angle and the side must be between the two angles. It's called the 'included' side.
ASA means Angle, Side, Angle
Answer: 
Explanation:
We plug the given coordinates into the distance formula

There isn't much we can do from there since we don't know the values of 'a' or 'b'. You could expand out each binomial, but it's more simplified being factored like that.