Which scatterplot suggests a linear relationship between x and y?

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

Anyone know? will mark brainliest if correct!

Ijust need to see how to do this. so you don’t have to answer all of them just a step by step explanation of one.