I have like 0 clue what this is. so can someone also explain it please.

What they are asking is in which box do each of the following numbers go into.

and would go in the 'Between 1 and 2' box.

goes under the 'Between 2and 3' box.

()^2 is the exact same as 3.5, as the square root and square cancel each other out, so it goes in the 'Between 3 and 4' box.

Hope that this helps!

for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c