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# Math

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BC: Ms. Pitt is the best teacher ever, hope she prays extra hard for me and this exam. Just saying.

FC: A YEAR IN REVIEW | My fiancee and I

1: Combining like terms is simple stuff. | Do exactly what it sounds like. Simply combine all like terms in an equation. I.e. 3a+2+4a+1 would combine to 7a+3.

2: Using the Distance formula (D=RT) may seem like a lot of work at first, but looks are deceiving. | Simply build a table, Solve for T, then set each "T" equal to itself. | Once you've found "R", plug it in to the table to find the rate for each item. | If asked to solve for "T" again, simply use the new rate to solve "T" for a numeric value

3: Don't get hit by a train. | Functions: -For Each X, there is One Y -Perform the Vertical Line Test | Domain - Set of "X" Coordinates Range - Set of "Y" Coordinates Relation - Set of ordered pairs Evaluate = Substitute | If a function is graphed, and a vertical line cannot pass through without intersecting the graph more than once at any point, it is not a function.

4: T | Three types of variation exist. Direct, Inverse, and Joint. | Direct Variation uses the formula y=k*X | Solve for K, the constant, then plug K in and solve for the Equation of Variation | Inverse variation uses y=(k/x) | And finally joint variation is y=kxz

5: { | { | MATH | Slope intercept form for slope is y=m(x)+b | "m" is the slope of the line. "b" is the y-intercept of a graph | Graph slope intercept form by hand using rise/run. If m=5/3; rise five, run three to the right, and place a point. Positive numbers go up and right, negative down and left.

6: Parallel lines have equal slopes. Perpendicular lines have negative reciprocal slopes | Put equations into slope-intercept form before determining if the slope, "m", is equal or a negative reciprocal

7: Elimination is a simple way to solve for multiple variables | " | Given that: 2x+ y =6 3x+4y=6 Multiply by a number that would allow a number to cancel itself. In this case, multiply the top by -4 | Once you solve for x, plug x in and solve for y.

8: Any negative radicand will equal i. I.e. sqrt(-25) = 5i i^2 = -1.

9: EASTER | happy | Spring Time | 25i^2 would equal 25(-1), or -25

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• By: Brandon S.
• Joined: about 7 years ago
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