PLZ help. The variables x=9 and y=15 vary directly. Write an equation that relates the variables

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?

Pentagon abcde is dilated according to the rule do,3(x, y) to create the image pentagon a'b'c'd'e', which is shown on the graph. what are the coordinates of point a of the pre-image? a) (-1, 1)b) (-1, 2)c) (-9, 6)d) (-9, 18)

Ellie spent $88.79 at the computer stote. she had $44.50 left to buy a cool hat. how much money did she originally have? write and solve an equation to answer the question.