Write an equation for the function whose graph is described.
The shape of
f(x) = |x|,
but shifted 13 units up and then reflected in the x-axis

Which values for a and b will create infinitely many solutions for this system of equations? ax-y=8 2x+y=b

Which statement accurately explains whether a reflection over the y-axis and a 270° counterclockwise rotation would map figure acb onto itself? a coordinate plane with figure acb with point a at 1, 1, c at 3, 4 and b at 5, 1 yes, a″c″b″ is located at a″(1, 1), c″(4, 3), and b″(1, 5) yes, a″c″b′ is located at a″(1, 1), c″(3, 4), and b″(5, 1) no, a″c″b″ is located at a″(1, 1), c″(4, 3), and b″(1, 5) no, a″c″b″ is located at a″(1, 1), c″(3, 4), and b″(5, 1)

Which shows the correct solution of the equation 1/2a+2/3b=50, when b=30?