Question

What is a zero of the function
f(x)= 2x-10

Answer 1

to find the zero of a polynomial u have to find x such that f(x)=0

Answer 2

so put f(x) =0 and solve for x.that will give you zero of f(x)

Answer 3

so it will be 10 ?

Answer 4

no
u put f(x)=0
this is the same as 2x-10=0 because f(x)=2x-10
now take 10 to the right hand side u get 2x=10
now think what would x be?

Answer 5

5

Answer 6

yes you are right

Answer 7

I have another question

Answer 8

so x=5 is a zero of f(x)

Answer 9

please feel free to ask

Answer 10

What is the solution to the system of equations above ?
x - y = 5
x + y = 7

Answer 11

you are looking for the point of intersection in this case

Answer 12

so could you use the elimination method ?

Answer 13

yes use elimination

Answer 14

actually just add both equations together (addition method)
2x=12
so what is x?

Answer 15

I was thinking about that , and x would be 6 .

Answer 16

yes not sub x=6 into one of the two equations (either one will work)
what is y?

Answer 17

1 ! (:

Answer 18

yes

Answer 19

I have more questions , can I ask them ?

Answer 20

post them separately please. Close this question and post a new one. If I have time I will help you, I have to do my homework

Answer 21

ok