The reflection of a point across the y-axis involves changing the sign of the x-coordinate while keeping the y-coordinate the same. In this case, the point (-1, -5) will reflect to (1, -5) across the y-axis. This is because the x-coordinate changes from -1 to 1, while the y-coordinate remains -5.
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For a reflection across the x axis, both the slope and the y intercept would have the same magnitude but the opposite sign.
Nothing really happens. y is swapped for -y. But that is what reflection means and so is a tautological answer!
a horizontal reflection is a reflection of the y axis. i.e (-fx)
(x' , y') = (-x + 1 , y + 4)
A' = (-1, -2)