Question

Can some one please help me solve the following problems i am working on functions.
1)y=2x+7
2)y=x2-7
3)y=x-45+3x
4) (2,4) (6,10) (12,_?_)
5) (7,_?_) (10,12) (12,16)

Answer 1

1)x=(y-7)/2
2)x=+-√(y+7)/4
3)x=(y+45)/4
4)18
5)10

Answer 2

thanks for the help means alot (:

Answer 3

you r always welcome!

Answer 4

i'm sorry,the second answer is wrong,it is,

2)+-√(y-7)

unknowingly,i put a 4 there...sorry...

Answer 5

OKAY THANKS(: