2. write an equation of the line that passes through the
points (1,3) and (-1,1).

What is the total surface area of this square pyramid?

What happens to the area as the sliders are adjusted? what do you think the formula for the area of a triangle is divided by 2?

Afrequency table of grades has five classes (a, b, c, d, f) with frequencies of 3, 13, 14, 5, and 3 respectively. using percentages, what are the relative frequencies of the five classes?