The answer is C(-2, 6).
I think you forgot the y in the first equation (with the -4.
Because they all have a different x number. Even though the y numbers are the same you can tell wether a set of numbers are a function by the x numbers. So since there are different x numbers it is a function. I hope this helps!
You can solve this by substitution.
x+y=10
x-y=4
===== add the equations
2x=14
x=7
Then plug in x into one of the equations
7+y=10
y=3
so x^2=7*7=49
y^2=3*3=9
Hope that helps!
Answer:
A=20 degrees
Step-by-step explanation:
All of the interior angles of a triangle must add up to 180 degrees, so:
2x+5x+11x=180
18x=180
x=10
A=2(10)=20
Hope this helps!
