Paralalell means that is has the same slope

y=mx+b

m=slope

y=-1x-2

slope=-1

the equation of a line that passes through the point (x1,y1) and has a slope of m is y-y1=m(x-x1)

given

(2,-2) and slope is -1

y-(-2)=-1(x-2)

y+2=-x+2

minus 2

y=-x

answer is y=-x

**Answer:**

Read below

**Step-by-step explanation:**

11. YX = 4.5

RQ corresponds to ZY. If RQ is 4 and ZY is 3, then ΔQRP was dilated by 0.75 to form ΔYZX. (3/4 = 0.75). Using this knowledge, we can find the length of YX by multiplying 6 by 0.75. (YX corresponds to QP). 6 × 0.75 = 4.5.

12. 55°

All of a triangle's angles must add up to 180°. ∠Q is 88°. ∠Z is 37°. ∠Z is congruent to ∠R because corresponding angles in similar triangles are congruent. So, 88° + 37° = 125°. We need to get to 180°, so 180° - 125° = 55°.

13. 4.2

BC corresponds to DF. We need to find the scale factor, so divide 2.7 by 3.6. That equals 0.75. AC corresponds to EF. EF is 5.6, so multiply 5.6 by 0.75. That equals 4.2.

I hope this helps :))

**Answer:**

number 4 is the correct answer for it equals 36

7a+21=56

Begin by subtracting 21 on both sides:

21-21=0 so the 21 in the left cancels, then 56-21=35

Your new equation will be

7a=35

Finally, divide by 7 on both sides:

7/7=1 and 35/7=5

your answer will be

a=5

I believe that you are right and B is the correct answer.