6x^2 - 9x - 6 function

yes

Step-by-step explanation:

f(x) = 6x² - 9x - 6        =   2x² - 3x - 2      

    =  (x + 0.5)(2x - 4)  

    =  [2x² - 4x] + [0.5(2x) + 0.5(-4)]

    =  2x² - 4x + 0.5(2x) + 0.5(-4)

    =  2x² - 4x + 1x + (-2)

    =  2x² - 3x  - 2

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value

c.

step-by-step explanation:

substitution for (0,1)

y=x^2+4x+1

1=0^2+4(x)0+1

1=0+4(x)0+1

1=4(x)0+1

1=0+1

1=1

substitution for (-3,-2)

y=x+1

-2=-3+1

-2=-2