Is the point 4,16 on the graph of the function y=4x? why?

Yes. It works in the equation.

Step-by-step explanation:

To see if (4,16) is on the line, substitute (4,16) into the equation.

y = 4x

16 = 4*4

16 = 16

It satisfies the equation and makes it a solution.

∠acb = 8°

step-by-step explanation:

∠xba lies on the circle and is half the measure of the intercepted arc ax

hence

measure of arc ax = 2 × 42° = 84°

∠acb is outside the circle and is

∠acb = (arcab - arcax ), hence

∠acb = 0.5 (100 - 84) = 0.5 × 16° = 8°

my answer is$ 12

step-by-step explanation:

because 15 -2=12