Question

What is the value of the function y=3x−1 when x=−1 ?

−8
−4
2
6

Answer 1

Substitute x for -1 in y=3x-1
y = (3) (-1) -1
Solve
y = (3) (-1) -1
y = -3 - 1
y = -4

B.) -4 is your answer

Answer 2

Option B is correct

Value of the function
`y =3x-1` when x =-1 is -4

Explanation:

Given the function:
`y =3x-1` ......[1]

Here, x is the input value and y is the output value.

Substitute the input value of x = -1 in [1]

`y =3(-1)-1`

⇒
`y =-3-1`

⇒
`y =-4`

Therefore, the value of the function
`y =3x-1` when x = -1 is -4