UNIT 1

UNIT 1

1. Chapter 1

   • 1.2 Visualizing Relationships in Data
     • Input & Output
       • Ordered pairs
       • For every input there is one output
     • Graphing two-Variable Data in a coordinate plane
     • Reading a graph
       • Independent variable Vs. Dependant Variable
   • 1.4 Functions: Describing Change
     • Definition of a function: A function is a relation in which each input gives exactly one output
     • Which Two-Variable Data Represent Functions: y is a function of x
     • How do you know a graph represents a function: Vertical line Test
     • Four ways to represent a function:
       • Verbally
       • Numerically
       • Symbolically
       • Graphically
   • 1.5 Function Notation: The concept of function as a rule
     • Function Notation
       • f(input)=output
     • The domain of a function: f(x)=x^2
   • 1.7 Working with Functions: Getting information from the graph
     • Domain and Range of a graph
       • Domain: Input, Independant variable, x-values.
       • Range:Outputs, Dependent Variable, y-values.
   • 1.9 Making and Using formulas
     • What is a formula? A equation involving variables
       • T=d/s

2. Chapter 2/7,1

   • 2.2 Linear Functions: Constant rate of change
     • Linear functions
       • f(x)=b+mx
     • Linear Functions and slope
       • Slope=Rise/Run
     • Using slope and rate of change
       • Slope= y2-y1/x2-x1=Rate of change
   • 2.3 Equations of lines: Making Linear Models
     • Slope intercept form
       • y=mx+b
     • Point-slope form
       • y-y1=m(x-x1)
   • 2.4 Varying the coefficients: Directly proportional
     • Parallel lines
       • Mx=Mx
   • 2.6 Linear equations: Getting info from a model
     • Two-Variable equations
       • y=1000+2x
     • One-Variable equations
       • 10=2+5x
   • 2.7 linear equations: where lines meet
     • Where lines meet
       • Tortoise equation
         • y=4h
       • Hare equation
         • y=-3+11h