How do you work out y equals 3x plus 1?

Answer 1

• If y=3x+1, then y increases by 3 every time x increases by 1
• x=1 --> y=3(1)+1, y=4
• x=2 --> y=3(2)+1, y=7
• x=3 --> y=3(3)+1, y=10
• etc. It cannot be solved completely, rather it is a line that can be graphed with slope=3