# Post 44: October 13th, 2016

First order of business today was Algebra. I learned about linear equations. Now, what are linear equations, you may ask? Complicated.

Let me go into more depth. A linear equation, by definition, has no operations besides addition, subtraction, and multiplication of a variable by a constant. You’re not allows to multiply variables together, or appear as a denominator. Additionally, variables cannot have exponents greater than one. The really big defining feature of a linear equation is in the name. When you graph it, it will always be a straight line. No curves or rapid twists, just a line.

Another big part of linear equations is standard form. All linear equations can be expressed in standard form, which looks like Ax + By = C, where A, B, and C are real numbers/integers, A is greater than or equal to zero, and A and B are not both zero.

Also important, X and Y intercepts. The X intercept is where the line crosses the X axis when you graph it, or when Y = zero. The Y intercept is reversed. It’s where the line crosses the Y axis, or when X = zero.

Now, on to other topics. Like game design! Now, what I did today mostly amounted to setting up the different error conditions, and I have an error loop going. If you make a guess of the wrong length, then the game will not advance your try number, but it will keep from crashing. Instead, it just asks you for a guess until you put in a proper one. Quite nice.

Also did some tidying up, but it mostly amounted to reorganizing, renaming, and such.

Lastly, economics. What I read today covered what a lot of people think in the united states about general economic ideas. There are 7 in the book:

• Economic Freedom: You can choose where to work, what to buy, owners can choose where and how they produce goods.
• Economic Efficiency: Resources are scarce, and must be used/harvested wisely.
• Economic Equity: Equal pay for equal work, minimum wage, no lying in advertising.
• Economic Security: Protection from adverse economic effects like layoffs, illness, etc. Social security is a big part in this.
• Full Employment: You get a job! You get a job! You get a job! Everyone gets a job!
• Price Stability: Nobody likes inflation, it makes it hard for people living on a fixed income to… well, live. People like price stability.
• Economic Growth: People want more. More money, better car, bigger home, other fun stuff. For example, more video games. People want the economy to get better so that they can get more stuff they love.

There are some conflicts between these goals however. Take, for example, a car company. A foreign car company might want to sell cars in the US. If you let them do that, it takes jobs away from the US car market. However, if you don’t, you restrict economic freedom by not letting people buy those cars. Many difficult questions and more in the wonderful world of economics!

## Author: Carl Hall

Brick and mortar school, cyber school, and now home school