lia's deck

• Direct Relationship:
• Can be represented by a function in the form of y = kx, where k≠0.
• Linear equation with the y intercept equals 0.
• Line goes through the origin.
• As "x" increases, "y" increases proportionally.
• On the graph you see a straight line.
• Direct Proportionality can be written as: y ∝ x (y is directly proportional to x)
• Equation may be written as: k= y/x (y divided by x)
• Inverse Relationships:
• Work oppositely.
• Usually a curve/sloping down.
• Inverse Relationships: Equation
• Inverse can be expressed as: y ∝ 1/x (Y is directly proportional to 1 over x)
• y = k/x, where x and y are the 2 quantities, and k is still the constant of proportionality, telling how much one varies when the other changes.
• ∝ = Directly proportional
• Types of Graphs:
• It is more effective to use trend lines instead of connecting the dots, since line graphs present changes for a short period of time.
• Trendline: Shows the general direction as a whole (Progression/regression).
• Connect the dots: They show slight, small (And sometimes insignificant) changes in the data.
• Measurement is a technique in which the properties of an object are determined by comparing them to a standard.
• The act of determining a target's size, length, weight, capacity, or other aspect. There are a number of terms similar to "measure" but which vary according to the purpose (such as "weight", "calculate", and "quantify"). People sometimes make tools to change the measurements of items.