Using Proportions part:2

Using Proportions part:2

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  • set up the proportion before step 1.  cents: days $5.50/7 = x/30 Step 1: cross multiply $5.50/7 = x/30 = $5.50*30 = 7*x $5.50*30= 165  7*x= 7x
  • Step 2: divide 165 ÷ 7= x 165 ÷ 7= 23.67 x= $23.67
  • Kevin earned $27.67 in 30 days Any questions?
  • Okay good. One last thing that I need to mention is how to show a proportional relationship on a graph.
  • In order to represent a proportional relationship on a graph the line needs to be straight, and it needs to pass straight through the origin.  (0,0)
  • And that is how you show proportions. Any questions about anything?
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