Three lessons on algebra - so don't laugh please!
I am working on a gcse practice sheet - but I am unable to understand: y = 3x - 2
The given values are :
x -1 0 1 2 3
y ? -2 1 ? 7
Unsure if I've put this problem across clear enough, but I then have to draw this equation y = 3x - 2 on a grid.
Please help if you can.