On the X side it’s +1
Hopefully this helps
Answer: (1,2)
Step-by-step explanation:
Reflecting across the y-axis means 
So, 
Answer:
Substitute
Step-by-step explanation:
Example
y=3
11+y=2x
The first thing you should do is put 3 in place of y in the second equation.
11+3=2x
14/2=2x/2
x=7