Which equation represents a line which is perpendicular to the line y = -4x - 5?

100 points, hi, i’m not sure how to get the equation from the graph and table.

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).

Select the number of ways in which a line and a circle can intersect