Graph the line that passes through the points (1,-9) and (1,-3) and determine the equation of the line

x = 1

Step-by-step explanation:

Note that the x-coordinates of the two given points are identical.  This tells us immediately that the line is a vertical one whose slope is undefined.

The equation of this line is x = 1.

∠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°

circle area = pi * radius^2

if diameter = 10 then radius = 5

circle area = pi * 5^2

circle area = pi * 25

circle area = 78.5398163397 square units

step-by-step explanation: