Graphing in Algebra 1

Graphing Resources

Clck on this link to create and print graph paper to a limited set of specifications
​http://www.mathopenref.com/coordblank.html  

Vertical Lines 
Vertical lines
  • undefined slope
  • x lines
  • parallel to y axis
  • parallel to all vertical lines
  • perpendicular to x axis
  • perpendicular to all horizontal lines
  • all points (given x, any y)

Click on Graph's lower right corner to investigate with Desmos

click to open​http://www.mathopenref.com/coordvertical.html link

Horizontal Lines
Horizontal lines
  • zero slope
  • y lines
  • parallel to x axis
  • parallel to all horizontal lines
  • perpendicular to y axis
  • perpendicular to all vertical lines
  • all points (any x, given y)

​Click on Graph's lower right corner to investigate with Desmos

click to open ​http://www.mathopenref.com/coordhorizontal.html link

Slope Intercept Form of Line
Slope Intercept Form of Line
y = mx+b
  • m= slope
  • m< 0 means down to the right 
  • m< 0 means up to the left
  • m> 0 means up to the right 
  • m> 0 means down to the left
  • parallel to all lines in the form                                                 y=mx+n with n not equal b
  • perpendicular to all lines in the form                                       y=(-1/m)x+p for any value of p
  • all points (any x, mx+b)

​​Click on Graph's lower right corner to investigate with Desmos

click here to open ​http://www.mathopenref.com/coordequation.html link

Point Slope Form of the Line
Point Slope Form of Line
y = m(x-h)+k
  • m= slope
  • m< 0 means down to the right 
  • m< 0 means up to the left
  • m> 0 means up to the right 
  • m> 0 means down to the left
  • (h,k) is the particular point that lies on line with slope m
  • all points (any x, mx+b)
 

​Click on Graph's lower right corner to investigate with Desmos

click to open ​http://www.mathopenref.com/coordequationps.html link