Which of the following is the equation of a line parallel to the line y = 4x + 1, passing through the point (5,1)?

a. 4x + y = 19
b. 4x - y = 19
c. 4x + y = -19
d. -4x - y = 19

4x-y=19 is the correct answer for this problem

∠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°