Question

Which of the following values, if any, would have to be excluded from the domain of this equation?

(x^2+6x-7)/(x-1) = y

Answer 1

denominator can not equal 0 as 1/0 it is not defined

Answer 2

x-1 \(\ne\) 0
x \(\ne\) 1

so you cannot input 1 to the function. it becomes undefined