"simplified the fraction to the simplest form, if you can't simplify more put UNDEFINED"

What is the equation in point slope form of the line that passes through the point (-1, -3) and has a slope of 4? y-1=4(x-3) or y+3=4(x+1)

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?

8litres of paint can cover 129.6 m². how much paint is required to paint an area of 243m²?