If

, then any ordered pair would satisfy the equation.
Since we're not given the ordered pairs, then this is the only information I can give to you.
The scale factor's 3 since 12 and 4 can be divided by 3 and -6 and -2 can also be divided by 3.
Arc AC would be 90 degrees because the line is bisects the straight line (180 Degrees)
Answer: 90 Degrees
I want points!!!!!!!!!!!!!!!!
18 Celsius because it is 64.4 in Fahrenheit which is a natural temperature and 50 is 122 in Fahrenheit which is very hot.
Hope I was helpful!