Answer:
3/2
Step-by-step explanation:
Let it be
C (5;4) , A (2;1) ; B(7;6)
Suppose that C divide the line AB in ratio m/n from point A (AC is m, CB is n)
Use the formula xc=(m*xb+n*xa)/ (m+n)
5=(m*7+2n)/(m+n)
5m+5n= 7m+2n
2m=3n
m/n=3/2
Y=4x+2. To get slope you use 6-2/1-0. Which gives you 4. You then put that in point slope form.
To complete the square, you would add to both sides (8/2)^2 = (4)^2 = 16. So, the correct answer would be D.