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Lines: plotting
Choose values for a and b and observe the values of

y = ax+b

a = b =      
x -2 -1 0 1 2 3 4 5 6
ax
b
ax+b

Use this table to solve: 3x+1=13   x=
4x-2=18   x=

Here is a plot of some points from a straight line equation.


Here you can move the point with your mouse (right-click to clear) and observe how the coordinates change. What is the equation that matches this graph?
a1 a2 a3 a4
b1 b2 b3 b4
c1 c2 c3 c4
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