What do the two following equations represent? y-8= 1/2 (x+5) y-8= -1/2(x+5)

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]

Which of the following answers is 7/9 simplified? 7/9 2/9 11/9 2/7

Solve the given system of equations. 2y= -x+9 , 3x-6= -15