1) As a dependant varible changes so does the independant. Since the independant variable depends on the dependant, when the independant changes so does the dependant. So if you had money as a dependant variable and distance (miles) as the independant, as your distance in miles increases so does your dependant variable of money. When you graph these the dependant variable goes on the y axis and your independant variable goes on the x axis.
2) The pattern of change shows up in a graph if the line or points are in a straight line. This means the rate is constant. A linear relationship shows up in a graph if the numbers increase at a steady rate. For Example....
Distance Money
1 $15
2 $30
3 $45
4 $60
5 $75
You can see as the distance increases by one the money increases by 15 dollars. That means it increases at a constant rate. To find a linear realtionship in an equation the number is part of that steady rate.
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