The new coordinate points are; A' = (2, -3), B' = (6, -8) and C' = (7, -4) and they are as plotted in the attached graph
The coordinates of the three vertices of the given triangle are;
A = (2, 3)
B = (6, 8)
C = (7, 4)
We are given the transformation with the rule (x, y)→(x, −y)
This means that it is reflected about x-axis
Thus, we will multiply y-value by -1 to get the new coordinate points as;
A' = (2, -3)
B' = (6, -8)
C' = (7, -4)
Now, we can locate these points and draw the graph as attached
Read more about Graph Transformations at; https://brainly.com/question/1548871
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