When we reflect a point across y=x, the x and y coordinates switch out , that is (x,y) becomes (y,x) . SO for point (1,2), on reflection across y=x, (1,2) becomes (2,1) . And when we do reflection across y=-x, (x,y) becomes (-y,-x). Therefore point (2,1) on reflection across y=-x becomes(-1,-2) .
So the final answer is (-1,-2) .
 
        
             
        
        
        
Answer: FALSE.
Step-by-step explanation:
 Given the following equation provided in the exercise:
 
 You need to solve for the variable "x". 
 In order to solve for "x" you can folllow the steps shown below:
 1. You must apply the Addition property of equality and add 13 to both sides of the equation. Then:
 
 2. Finally you need to apply the Subtraction property of equality and subtract "x" from both sides of the equation. So you get:
 
 Therefore, as you can observe, the given equation has no solutions.
 
        
             
        
        
        
Answer:
There are no solutions.
Step-by-step explanation:
Nothing can be done further.
 
        
             
        
        
        
 70 degrees, hope this helped.
        
             
        
        
        
Answer:
The answer is: The two shops never charge the same price for sundaes with the same number of scoops.
Step-by-step explanation: