Question 5627
You would use the distance formula to solve thise:

{{{d = sqrt((x2-x1)^2+(y2-y1)^2)}}}

The x1, y1 come from the first given point: (-1, -4) and the x2, y2 come from the second given point: (-6, 0).

Substitute the appropriate x and y coordinates into the distance formula and solve for d.

{{{d = sqrt((-6-(-1))^2 + (0-(-4))^2)}}}
{{{d = sqrt((-5)^2 + (4)^2)))}}}
{{{d = sqrt(25 + 16)}}}
{{{d = sqrt(41)}}}
d = 6.4 approximately.