Answer:

Step-by-step explanation:
We are given the following in the question:

where r and r are the radius of the circle.
General equation of circle:

where(h,k,j) is the center of the circle and r is the radius of circle.
If the circle is centered at origin, then,

Equation of circle with radius R centered on origin

Inequality to describe the region that consist of all points lying between the sphere of radius r and R but not on the sphere is given by:

Answer:
v stands for velocity. v1 is the initial velocity or the velocity at the start and v2 is the final velocity or the velocity at the end. the equation is the equation for acceleration.
To find the slope between these two points, we can use the slope formula.

-3 + 7 / -4 - 1
4 / -5
-4/5
The slope of the line between these two points is -4/5. (This is your answer.)