Answers edited by Grégory V.

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• Is (-3,-2), (-1,0), (0,1), (1,2) a function?
  
• How do you find the distance between (–3, –2) and (1, 4)?
  
• How do you graph #y = - abs(x-3) + 5#?
  
• How do you simplify #2ab+ba+3b#?
  
• How do you solve #abs(4x-5)>16 #?
  
• How do you find the vertex of a parabola #f(x) = x^2 - 2x - 3#?
  
• How do you solve #2a^2 + 8a − 5 = 0# by completing the square?
  
• Which of the ordered pairs (6, 1), (10, 0), (6, –1), (–22, 8) are solutions for the equation x + 4y = 10?