**Answer:**

y = -3x -3

**Step-by-step explanation:**

**Answer:**

$8.35

**Step-by-step explanation:**

6 pounds is $8.35

**Answer:**

12:15 is NOT proportional to 3:4

**Step-by-step explanation:**

7.5:10 is proportional to 3:4 because 3×2.5=7.5, and 4×2.5=10.

39:52 is proportional to 3:4 because 3×13=39, and 4×13=52

45:60 is proportional to 3:4 because 3x15=45, and 4×15=60

**12:15 is not proportional to 3:4 because while ****you**** ****can**** ****multiply**** ****3x4****=12, you can not multiply**** ****4****×****4**** ****to**** ****get**** ****15****,**** ****you**** ****get**** ****16**** ****instead****.**

**Answer:**

45°

**Step-by-step explanation:**

= 45°