1) find the zero of f(x)=-4x+6

2) find the zero of f(x)=x^-4x-12

3) whats the domain of f(x) x^2-8x-9

4) whats the range of the following relation {(2,3)(-3,2)(2,9)(1,3)}

5) whats the domain of f(x)= x= the square root of -9

1) f( 0 ) = -4( 0 ) + 6 = 6

2) f( 0 ) = -12

3) x=-9 x=1

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