# Linear graphs

• Linear equations are in the format $$y = mx + c$$
• Coordinates are in the form (X,Y)
• Example: (3,7)
• To find the coordinates of a line, substitute y and x
• Example:
• $$y = 2x - 1$$
• Substitute 0 as x, giving you $$y = 2 \times 0 - 1$$, leaving you with $$y = -1$$
• This give you the coordinates (0,-1)
• Do this again, so you have coordinates to draw a line

Created: 2021-11-13 Sat 19:39

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