Can you help me with double roots?

Question

can any one explain to me in simple words what they are and explain it to me by using this example: 8y^2+1=6y ? or something like that..

Answer 1

8y^2+1=6y

8y^2-6y+1=0

(4y-1)(2y - 1) =0

by the zero property

either 4y-1=0 or 2y-1=0

y = +1/4 or y = +1/2

this has 2  diferent  intercepts

this isnt a double root problem.....

a double root problem would be if (4y-1)(4y-1)

what this means is that there is only 1  intercept and the grpah "sits" on the axis.