...I have a B.A. degree in Mathematics and a Ph.D. in theoretical physics. Also, many years' experience in academia, government and industry. I have a B.A. in mathematics and a Ph.D in physics. (read more)
...B tells us how high the line starts off. These equations, though simple, are very useful in real life. For example: a roofer charges $10 per square foot plus a flat fee of $200.
y = 10x + 200
This equation tells us how much we'd pay (y) depending on the square footage (x) we plug in. (read more)