Help please I'm like struggling

Choice 4)  AC is four times longer than DF

Explanation:

Let's say AC is 4 units long. This makes AE half as long because AE is a radius of the larger circle and AC is the diameter of that same larger circle. So we know AE = 2. Segment DE is also a radius of that circle. So AE = DE = 2.

Segment DF is half as long as DE, leading to DF = DE/2 = 2/2 = 1.

We have DF = 1 and AC = 4. This shows AC is four times longer than DF.

Put another way:

AC = 2*(AE)

AC = 2*(DE)

AC = 2*(2*DF)

AC = (2*2)*DF

AC = 4*DF

So AC is four times longer than DF. We can replace DE with 2*DF since the diameter DE is twice as long compared the radius DF (for the smaller circle).

y=3x+4

step-by-step explanation:

given the points a(0,4) and b(-4, -8)

eqn of line ab: (y-4)/(x-0)=(-8-4)/(-4-0)

(y-4)/x=-12/-4=3

y=3x+4