The easiest way to think about it (at least in my opinion) is to count how many times 6 can fit into 47. 6 can fit into 47 7 times (6 • 7 = 42). 5 is still left of=ver so your final answer as a mixed number would be 7
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1). y-3=-2(x+4)
2) slope = 3/4
y+2=3/4(x+4)
y=3/4x +1
3x-4y=4
looks like only the last one
Yes all whole numbers are also rational number because they can be represented as a ratio of itself and 1, or as ratio of two other whole numbers.
For example:
4 = 8 / 2
4 = 4 /1
-3 = -9 / 3
1 = 1 / 1
3 = 3 / 1