This is a bit of a guess, but I think probably a) +4 and also a) -215
The answer is: [B]: " 9 * 10⁻³ " .
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Y=mx+b, m=(y2-y1)/(x2-x1)
m=(7-4)/(6--3)=3/9=1/3
y=x/3 +b, now use either point to solve for b, I'll use (6,7)
7=6/3 +b
7=2+b
b=5 so our line is:
y=x/3 +5 or more neatly...
y=(x+15)/3
No its not posible because the sine is 1.5 and it cant be higher then 1
Your answer is 4.88 using PEMDAS