Wednesday, April 27, 2011
M8D1:(C) Use set notation denote elements of a set
A set, informally, is a collection of things. The "things" in the set are called the "elements", and are listed inside curly braces. Example, {pillow, rumpled bedspread, a stuffed animal, one very fat cat who's taking a nap}
Tuesday, April 26, 2011
M8A5:(C) Graph the solution set of a system of liner inequalities in two variables
M8A5:(B) Solve systems of equations algebracally and graphically
(ax+by=c) -ex. -2x+3y=8, for this equation you multiply -3 on both sides, 9x-3y=-15, this will eliminate your threes -2x+3y=8 next you will have 7x=7 divide 7 on both sides 7x=7 your 7s will be eliminated this
9x-3y=-15 7 7
will leave you with your first solution x=-1.........next you subsitute in -2(-1)+3y=8, two negatives cancel out so you get 2+3y=8 next you will have 3y+6 divide 3 on both sides and get y=2 your coordinates are (-1,2) when you graph -1 is on your x and 2 is on your y
M8A4:(C) Graph equations of the form y=mx+b
Y=MX + B
- What is the y-intercept of the line y = mx + b?
- How do you use the slope of a line to assist in graphing?
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