What rule would you allow to test weather (x, y) is on line l

Step-by-step explanation:

If a point (x, y) lies on a straight line, coordinates of the point will satisfy the equation.

Slope of a line passing through two points C(4, 5) and D(8, 10),

m =

m =

m =

Equation of the line passing through C(4, 5) and slope m =

y - y' = m(x - x')

y - 5 =

y =

y =

If point B(4, 0) lies on the line CD,

0 =

0 = 5

Which is not true.

Therefore, point B doesn't lie on line CD.

256π units²   (answer b)

step-by-step explanation:

the formula for the surface area of a sphere of radius r

is             a = 4πr²

and so, if r = 8 units, then the surface area is:

a = 4π(8 units)² = 256π units²   (answer b)

0.84 dang lotta people are looking for this lol or if you round up its 1 but the overall answer to that is 0.84

step-by-step explanation: