They are 4 unit away from the Y axis because you are counting the square units from Y not the lines across.
Answer:
31
Step-by-step explanation:
-4+16+19=31
ANSWER: Exact Form:
![\sqrt{10}](https://tex.z-dn.net/?f=%5Csqrt%7B10%7D)
Decimal Form: 3.16227766
STEP-BY-STEP EXPLANATION:
(1, 2) and (4,3)
Use the distance formula to determine the distance between the two points.
Distance = \sqrt{(X2-X1)^{2 }+ (Y2-Y1)^{2} }
Substitute the actual values of the points into the distance formula.
\sqrt{(4-1)^{2 }+ (3-2)^{2} }
The result can be shown in multiple forms.
Exact Form:
![\sqrt{10}](https://tex.z-dn.net/?f=%5Csqrt%7B10%7D)
Decimal Form: 3.16227766
I think the answer is 1/2!
When reflecting something across the y axis, the x point becomes of the opposite parity (for example, when reflecting (1,2) across the y axis, the result would be (-1,2)). In this case, we can start by doing this for each of the individual points.
J (1,4) becomes (-1,4) when reflected across the y axis
R (2,1) becomes (-2,1) when reflected across the y axis
A (3,5) becomes (-3,5) when reflected across the y axis
So, I think that your mistake was that you thought that reflecting across the y axis meant changing the y coordinate. That being said, the correct answer is A.