Slope-intercept form:
y=mx+b
m=slope
we have the equation:
y=-7x
Therefore the slope will be "-7".
Answer: the slope of this line is -7.
<u>Part 1</u>
<u />
We need to make sure the radical is defined, meaning the radicand has to be non-negative. Thus, the domain is 
<u>Part 2</u>
<u />
We need to make sure the radical is defined, meaning the radicand has to be non-negative. Thus,

Thus, the domain in interval notation is 
2 to the 3rd power (2^3) times x to the second (x^2)