This book is for young students Gifted or Advanced in math.
Students need the best teacher, so you need examples,
because examples are the best teacher. So this is a book of examples, and all the
examples are fully worked, and of course, help you do math better.
And this book covers equations indicating lines, that is, equations for lines, often called
linear equations or equations of degree 1, and explains what a line is about, how it gets
made, what it does, how it works, and what we can do with it or how to use it.
So you will get the idea of a line, that is, the concept, and get to see how to work with it,
because the book explains, through examples, many equations for lines, how they get
made and how they work, along with their nature.
And this book is particularly for those students who want to study calculus later or now
in university level, and want to be science or engineering majors. And some sample
pages are at: http://www.runmath.com/ExcerptFromCncs1SeongKim.pdf