PLEASE HELP FUNCTION EQUATIONS

The equation y=3x−5 represents a function. True False

A function can only be represented by a straight line on the coordinate plane. True False

What are the ordered pairs for y = 4x + 2 using x={−2,  1, 2}

What is the value of the function at x=3? (see attachment)

What is the value of the function y=2x−3 when x=−1?

{(3, 2),(6, 4),(9, 6),(12, 8)} Is a Function or Is Not a Function

{(2, 3),(2, 5),(3, 6),(9, 4)} Is a Function or Is Not a Function

{(2, 4),(6, 3),(4, 8),(6, 6)} Is a Function or Is Not a Function

{(3, 4),(5, 2),(6, 8),(6, 4)} Is a Function or Is Not a Function

Will thanks and brainliest anyone who gives correct answers!