Please help im taking a test right now

Which shows the pre image of triangle xyz

Question: a) does the given set of points represent a linear function? how do you know? b) assume that the point (-2,4) lies on the graph of a line. what y-values could complete this set of ordered pairs that lie on the same line: (- (hint: there are several correct answ

What is the value of x in the following equation? -3x-2=2x+8