Linear relationship is a type of relationship between two variables in which one variable is directly proportional to the other. This means that when one variable increases, the other variable also increases, and when one variable decreases, the other variable also decreases. Linear relationships can be found in many areas of life, including <a href='/Economics'>economics</a>, <a href='/Physics'>physics</a>, and <a href='/Mathematics'>mathematics</a>.<br><br>In <a href='/Economics'>economics</a>, linear relationships are often used to describe the relationship between two variables, such as the price of a good and the quantity of that good that is demanded. This type of relationship is known as the demand curve, and it shows how the quantity of a good that is demanded changes as the price of the good changes.<br><br>In <a href='/Physics'>physics</a>, linear relationships are often used to describe the relationship between two variables, such as the force applied to an object and the acceleration of the object. This type of relationship is known as Newton