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Question in photo​

See below

Step-by-step explanation:

ΔABC has been flipped over, so we have a reflexion using line BC

So, the answer to 1.  is line BC

The result is ΔE'F'D'

Now ΔE'F'D' is moved 4 units to the right.  That is the answer to 2.

The result is ΔE"F"D"

Finally ΔE"F"D" is moved 1 unit down.  That is the answer to 3.

The final result is ΔEFD

Ok.  Did that help you?

3. parallelogram

step-by-step explanation:

we turn each of our sides into direction vectors

ab=b-a=(3 - 7, 1 - 0) = (-4, 1)

bc=c-b=(1,6)

cd=d-c=(4,-1)

da=a-d=(-1,-6)

we see how the opposite sides have negated direction vectors; this is characteristic of a parallelogram.   we have congruent sides ab=cd and bc=da with unequal lengths because 1^2+6^2 is different from (-4)^2+1^2.   so it's not a square or a rhombus.  

we check the dot product of direction vectors of adjacent sides.   we have

ab dot bc = -4(1) + 1(6) = 2

that's not zero so the sides are not perpendicular.   we've ruled out rectangle.

the direction vectors indicate two pairs of congruent parallel sides, so we choose parallelogram over trapezoid.

the answer would be 1 1/72

step-by-step explanation:

you can rewrite the equation by separating the parts and then solving individually:

10-9=1

1/8 - 1/9=

find l c d and then combine:

1 1/72