Are these two equations sometimes never or always equivalent 12(8y-16k) and 16(2y - 4k)

The value √10 and √15 are plotted on the number line

Which is the graph of the piecewise function f(x)? f(x)=[tex]f(x) = \left \{ {{-x+1, x\leq 0 } \atop {x+1, x\ \textgreater \ 0}} \right.[/tex]

The only way to identify an intercept is as an ordered pair. true false