3.0/4.0/5.0 Expressions/Equations Cheat Sheet Expressions • Doesn’t have equal sign • GEMDAS: Grouping symbols Exponents Multiplicaiton/Divis ion Addition/Subtraction Equations: • Have equal sign • Inverse operations (to both sides) • Absolute Value: branch into negative and positive answer • Inequalities: Flip the symbol when mult/div by negative • Absolute Value Inequalities: branch into negative and positive answer (flip symbol of negative answer)
3.0/4.0/5.0 Expressions/ Equations Cheat Sheet. Expressions Doesn’t have equal sign GEMDAS: G rouping symbols E xponents M ultiplicaiton / D ivision A ddition/ S ubtraction. Equations: Have equal sign Inverse operations (to both sides) - PowerPoint PPT Presentation
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3.0/4.0/5.0 Expressions/Equations Cheat Sheet
Expressions• Doesn’t have equal sign• GEMDAS:Grouping symbols Exponents Multiplicaiton/Division Addition/Subtraction
Equations: • Have equal sign• Inverse operations (to both
sides)• Absolute Value: branch into
negative and positive answer• Inequalities: Flip the symbol
when mult/div by negative • Absolute Value Inequalities:
branch into negative and positive answer (flip symbol of negative answer)
6.0/7.0/8.0 Graphing Cheat Sheet
Slope y – intercept Form Vs. Standard Form- y = mx + b - tells us
nothing- m: slope - to
graph: - b: y – intercept - find
and plot intercepts
- convert to y = mx + bPoint - Slope Form:- y – y1 = m(x – x1)- (x1 , y1): point- m: slope
6.0/7.0/8.0 Graphing Cheat Sheet
Horizontal vs. Vertical- m = o - m = undefined - Ex: y = 2 - Ex: x = 2
Parallel vs. Perpendicular- Same slope, - opposite reciprocal slopesdifferent y – intercept
A point is a solution if it makes a true statement
9.0 Systems Cheat Sheet• Solution is the point of intersection (x, y)
• Methods: Graphing SubstitutionAddition/EliminationUse when: - given a graph