ordered pair

ordered pair

1. y

   • relation
     • any set of ordered pairs
     • function
       • y=f(X) a relation where each input has only one output
       • linear equation
         • • • function
         • slope intercept form
           • y=mx + b
           • m=slope
           • b= y intercept
         • point slope form
           • y-y1=m(x-x1)
           • m=slope
             • same slope lines parallel
             • slopes of lines are negative reciprocals of each other then lines are perpendicualr.
           • point (x1,y1)
         • general form
           • A= coefficient of x
           • B=coefficient of y
           • 0=Ax + By + C
           • C=constant
         • solving
           • substitution
             • -Solve one equation for one variable. -Substitute the expression in the other equation obtaining an equation with one variable.
           • elimination
             • -Adjust the coefficients if needed by multiplying one of both equations by appropriate numbers. -Add the equation to eliminate a variable. -Solve for the remaining variable.
   • output
   • • • • • • y
               • dependent
                 • • • y

2. x

   • input
   • • x
       • domain
       • • • • X
               • independent
               • direct proportion
                 • initial value = 0 k= constant
                 • y= kx

3. best fit

   • A line of best fit is a straight line drawn through the center of a group of data points plotted on a scatter plot.