{(4, 5), (–6, –7), (–3, –8), (2, –8), (3, –7), (0, 0)} Is this a function or no?

What is the slope of the line that contains the points (4,8) and (9,8)? what type of line is it?

Which of the following statements is not true? a.parallel lines are lines in the same plane that never intersect. b.congruent figures have the same shape and same size angles and sides. c.similar figures must have the same shape and the same size. d.a rotation is when you turn a figure around a certain point.

Pls! does anybody know a shortcut for answering these types of questions in the future?