This document presents 3 math word problems and provides explanations of consistent and dependent relationships between hypotheses and conclusions in if-then statements. Problem 1 involves finding 2 numbers given their sum and difference. Problem 2 involves finding a person's age given the sum of their age and another's age from 2 years ago. Problem 3 involves finding the larger of 2 numbers given a relationship between them. It then defines consistent and dependent relationships between equations in a system as having coinciding graphs where the lines have equal slopes and y-intercepts.