Find any points of discontinuity for the rational function... y=x-3/x^2-3x-10

Explain why the function is discontinuous at the given number a. (select all that apply.) f(x) = 1 x + 1 a = −1 f(−1) is undefined. lim x→−1+ f(x) and lim x→−1− f(x) exist, but are not equal. lim x→−1 f(x) does not exist. f(−1) and lim x→−1 f(x) exist, but are not equal. none of the above

X+ y = 5 ; x - y =3 solve using linear combination

What is the graph of the function fx x+2/x-3?