5. Graphing Linear Equations in Slope-Intercept Form
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A reflection in the y-axis means to replace all of the x-values of the coordinates with their opposites.
Q'(4,4), R'(2,2), S'(2,-1), and T'(4,-3)
Therefore, we get the points Q'(4,4), R'(2,2), S'(2,-1), and T'(4,-3).