Help I don’t know answer

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

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?

Solve the equation by completing the square. x^2+2x=17