LINEAR EQ.

• Linear eq

  highest degree is one
• graph is a line
• linear can be expressed via

  slope=

  y=mx+b

  standard

  Ax+Bx=C

  point slope

  y-y1= m(x-x1)
• angle at 45

  m= 1
• if graph vertical, slope und
• to get slope using points

  m= rise/run

  m= y2-y1/ x2-x1
• parallel lines = same slope

  perpendicular=

  m1= 1/m2
• y int is b

  mx+b
• x int and y int via sub zero