Fraction strips can help because you can see if one strip can line up equally with the other.
Answer:
y = -x +5
Step-by-step explanation:
The 2-point form of the equation of a line is useful for this.
y = (y2 -y1)/(x2 -x1)(x -x1) + y1 . . . 2-point form of equation for a line
y = (-2 -6)/(7 -(-1))/(x -(-1)) +6 . . . . substitute the give points
y = -8/8(x +1) +6 . . . . . . . . . . . . . . simplify a bit; next, simplify more
y = -x +5
No, because it has nothing to do with breaking the numbers down