Answers edited by Kiki the carrot

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• How do you write an algebraic expression for each phrase: 4g + 3h + 2g - 3h?
  
• A line passes through #(2 ,9 )# and #(5 ,2 )#. A second line passes through #(3 ,8 )#. What is one other point that the second line may pass through if it is parallel to the first line?
  
• How do you solve #-9 + 8k = 7 + 4k#?
  
• How do you simplify #\frac { 7a } { 7a ^ { 4} }#?