What is the equation of this line
Pls help with number 5

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)

Write the expression 7x^3-28xy^2 as the product of 3 factors

Acompany produces packets of soap powder labeled “giant size 32 ounces.” the actual weight of soap powder in such a box has a normal distribution with a mean of 33 oz and a standard deviation of 0.7 oz. to avoid having dissatisfied customers, the company says a box of soap is considered underweight if it weighs less than 32 oz. to avoid losing money, it labels the top 5% (the heaviest 5%) overweight. how heavy does a box have to be for it to be labeled overweight?