Thursday, March 12, 2009

Linear Functions and Equations

13. 2x+y=6 plot-ordered pair as a point in a number plane.

y= 6-2x horizontal axis-horizontal number line

14. 5x+y=7 origin-point of intersection at y & x on a coordinate

y=7-5x vertical axis-second number line

15. 3x+2y=8 x-axis-horizontal axis

y=-3/2x+4 y-axis-vertical axis

16.2x+5y=10 graph of ordered pair-(2,3)

y=-2/5x+2 coordinates- shown as pair of letters/numbers (2,3)

x-coordinate- position of coordinate according to x-axis

y-coordinate-position of coordinate according to y-axis

coordinate axes- y/x axes

coordinate plane- contains 2 perpendicular axes(x,y)

quadrants- quarter of a circle or its circumference

linear equation-relating to a line, straight direction

Graph of Equation-2 variables that consist of all points that are the
solution to equation.

Thursday, February 19, 2009

Monthly Income



I want to be a famous Cosmetologist. I get $1200 a month.




1) Your rent plus utilities (gas, water, internet, phone, etc.) is $540 a month! What percentage of your monthly income is this?
My utilities would be about 45% of my monthly income.




2) You spend about 6% of your income per month on your cell phone bill! What amount is this?


My cell phone bill would be about $72.00 out of my monthly income.




3) You usually spend around $200 per month on groceries. Find this percentage.


Grocerys would cost about 17% or 16.66666% of my monthly income.




4) You spend about $40 per week on gas filling your car's gas tank! What percentage of your monthly income is spent on gas?


3.33333% would be spent on gas.




5) You like to use the remaining money and split it - using 60% on entertainment (movies, shopping, etc.) and putting the other 40% in savings. About how much money is spent on entertainment and how much is put in savings?

The final price after all of my bills in one month would be $214.67. So with entertainment, would spend about $128.80. I would have $84.87 left to put into savings.