math simple help

1. What is the equation of the line through the points

(−4,8)
and

(−3,−8)
?

Enter your answer in slope-intercept form

y=mx+b
.

2.Find the equation of the line through the points

(−8,3)
and

(−4,5)
.
Enter your answer in standard form

Ax+By=C
.

3. Find the slope of the following line:

y=−3x+6

4. Use interval notation and

∪
to express the following:

The set of all numbers less than or equal to

−1
or greater than

4
.