Which expression correctly simplifies ... (see photo)

15 points ! ~ see if you know the answer to both you!

Is each relation a function? if so, state whether it is one-to-one or many-to-one. 3. (-4,7), (-3,5), (1,4), (3,-8), (5,-11) 4. (-4,8), (-2,4), (0,1), (2,4), (4,8) 5. (-2, 1), (-2,3), (0,-3), (1,4), (3,1)

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)