There are a couple of things you need to do when solving problems.
Ask yourself exactly what type of information is being asked for: Is it one of addition, subtraction, multiplication, or division?
All of these different permutations of the above example work the same way: Take the general equation for the curve, plug in the given points, and solve the resulting system of equations for the values of the coefficients.
Many students find solving algebra word problems difficult.
Many problems lend themselves to being solved with systems of linear equations.
In "real life", these problems can be incredibly complex.
Once you’ve identified your clue words, highlight or underline them.
This will let you know what kind of problem you’re dealing with.
This is one reason why linear algebra (the study of linear systems and related concepts) is its own branch of mathematics.
In your studies, however, you will generally be faced with much simpler problems. The ten's digit stands for "ten times of this digit's value".