Question

Select all of the following that are ordered pairs of the given function.

f(x) = 3- 2х
(-2, -1)
(-1, 5)
(0,3)
(1, 0)
(2, -1)

Answer 1

(-1, 5)

(0, 3)

(2, -1)

Explanation:

we have

`f(x)=3-2x`

Remember that

If a ordered pair is a solution of the given function, then the ordered pair must satisfy the given function

Verify each case

case a) (-2, -1)

substitute the value of x and the value of y in the given function and compare the result

`-1=3-2(-2)`

`-1=7` ---> is not true

therefore

Is not a ordered pair of the given function

case b) (-1, 5)

substitute the value of x and the value of y in the given function and compare the result

`5=3-2(-1)`

`5=5` ---> is true

therefore

Is a ordered pair of the given function

case c) (0, 3)

substitute the value of x and the value of y in the given function and compare the result

`3=3-2(0)`

`3=3` ---> is true

therefore

Is a ordered pair of the given function

case d) (1,0)

substitute the value of x and the value of y in the given function and compare the result

`0=3-2(1)`

`0=1` ---> is not true

therefore

Is not a ordered pair of the given function

case e) (2, -1)

substitute the value of x and the value of y in the given function and compare the result

`-1=3-2(2)`

`-1=-1` ---> is true

therefore

Is a ordered pair of the given function