Science Starter! Perform the following conversions and dimensional analysis problems. Reflect your answer in scientific notation. 1)30 in  mm 2)50 mi/hr  m/s

Graphing Basics

Parts of a Graph Variable that is controlled in an experiment (x - axis) Variable that is measured during an experiment (y - axis) “Best Fit” Line

Types of Relationships LINEAR - Straight line - Direct Relationship - Equation: y = mx + b Slope [Steepness of line] = (Y 2 – Y 1 ) or RISE (X 2 – X 1 ) RUN

Graphing Data “X” [Ind.] “Y” [Dep.] Etc. Data Chart - Determine the independent and dependent variables Plot Data - Place a dot at the intersection of the two variables

Calculating Slope 1.Choose any two points on the line of best fit: (not data points) EX: ( y = 15, x = 30) and ( y = 0, x = 0) 1.Calculate slope by dividing the difference in the “y” values by the difference in the “x” values: EX: Slope = (15 – 0) (30 – 0) Slope = 0.5

Enclosed Area 1.Shade in the region in question: EX: Find the area enclosed by the line of best fit and the horizontal axis between x = 0 and x = Use geometry and the values on the axis (NOT number of blocks) to find the area of the shape made. EX: A = ½ bh = ½ (30)(15) = 225

Non-Linear Graphs

# of bags # of Red Candies

# of bags # of Red Candies

Area = ½ bh = ( ½ )(6)(14.5) = 43.5