Sure, we can calculate the slope of the line that passes through two points using the formula m = (y2 - y1) / (x2 - x1), where (x1, y1) and (x2, y2) are the coordinates of the points.
For (-20,-4) and (-12,-10), x1 = -20, y1 = -4, x2 = -12, and y2 = -10.
We'll just substitute these values into the formula.
The change in y (or y2 - y1) is -10 - (-4), which equals -6.
The change in x (or x2 - x1) is -12 - (-20), which equals 8.
Finally, divide the change in y by the change in x to find the slope m = -6 / 8 = -0.75.
So, the slope of the line that passes through the points (-20,-4) and (-12,-10) is -0.75.