Linguine yuh 2.1 livery Functional Elk Look at this set of ordered pairs: (12, 4) (2, -15) (12, 11) (12, 3) Is this relation a function? yes or no​

There is a line with slope 1/a going through the point (a, a²). find the equation of the line perpendicular to this line at this point. (don’t let this problem intimidate you! solve the problem as you would if i’d given you specific values. just use variables instead.)

Use the radius you found in part i (r=26.8 cm) with the surface area formula below to find the surface area of the sphere. show your work and round your answer to the nearest tenth. the surface area of a sphere: sa = 4πr^2 self note: 3.8.4

What is the slope simplify your answer and write it as a proper fraction, improper fraction, or integer