Determine the measure of ∠DFB. 1)

67°

2)

136°

3)

69°

4)

68°

Step-by-step explanation:

The arc defining one part of the circle + the arc vertically opposite the given arc when added must be divided by 2. That's the value of angle at the intersection.

In this case, (arc BD + arcEC)/2 = < EFC

Arc bd = 69

Arc CE = 67

<EFC = (69 + 67)/2 = 68

So the answer is number 4

(1, –1), (16, –4), (36, –6)

step-by-step explanation:

given that the function is

this can also be written as

we have to graph this function and check which list of points lie on the graph

see attachment for graph:

we find that the points lying are (1,-1) (16,-4) and (36,-6)

since square root is there we find that x can only be posiitve but y can be since square root both positive and negative.