Help! i give brainliest

Write two point-slope equations for the line passing through the points (6, 5) and (3, 1)

What is the product? a-3/15a × 5/a-3

Serena is making an experiment. for that, she needs 20 grams of a 52% solution of salt. she has two large bottles of salt water: one with 40% and the other with 70% of salt in them. how much of each must she use to make the solution she needs? i am in need of