Question

I NEED HELP SOON! THESE ARE DUE SOON!

Answer 1

Q2: J. all real numbers.

Q4:
`f(3)=-20`

Q15:
`y=-3x+5`

Explanation:

Q2: J. All real numbers.

Range: It can be
`y\geq 1`.

It can't be
`y\geq 2`.

Domain: It can't be
`x\geq 1` because it is going from (-∞,+∞)

Q4:

`f(x)=-2x^2+x-5,f(3)=?`

Plugin x with 3 into the equation.

`f(3)=-2(3)^2+(3)-5\\f(3)=-2*9+3-5\\f(3)=-18+3-5=-20\\f(3)=-20`

Q15: point-slope form.

`y-(y_1)=m(x-x_0)`, plugin
`(2,-1)=(x_0,y_0)` and m=-3

`y-(-1)=-3(x-(2))\\y+1=-3(x-2)\\y+1=-3x+6\\y=-3x+5`