Hi everyone! This page is an introduction to proportional relationships. It is short but I hope everyone finds it useful, enjoy!
Now the ratio of the distance in miles to the distance in meters is constant ,
1 mile = 1609/) meters same as saying y = 1609 x where x represents no. of meters and y represents no. of miles.
This relations is said to be proportional . A proportional relation is a relation between two qualities in which the ratio of one quantity to the other quantity is constant.
A proportional relationship can be described by an equation of the form of y = kx, where k is a number called the constant of proportionality.
Looking back at our example, 1609 would be are constant of proportionality, it never changes. Because duh, it's a constant. Another useful form of the equation is . is needed when you are trying to find the constant of proportionality.
We are currently talking about proportional relationship in the algebraic way. How about on a graph? Well, on a graph, in order to know whether it is proportional or not is seeing the line pass the origin or in other words pass (0,0).
My next discussion post will be about linear equations. Feel free to comment below for any ideas and improvements! Hope you liked it! Thanks!