Jon drew a triangle with coordinates (5,1), (7,-2) and (3,-1) he drew an image of the triangle with the coordinates of (5,-1), (
2 answers:
Answer: C. Reflected over x axis
Step-by-step explanation:
When we reflect a figure over x-axis , then the magnitude of each corresponding coordinate remains same but the polarity of y-coordinate gets changed.
i.e. The rule for reflection across x-axis is :_
Given : Jon drew a triangle with coordinates (5,1), (7,-2) and (3,-1) he drew an image of the triangle with the coordinates of (5,-1), (7,2) and (3,1).
We can see that the magnitude of each corresponding coordinate remains same but the polarity of y-coordinate got change.
It means he made the image by reflecting it over x-axis.
Hence, C is the CORRECT answer.
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47 -14i
You can work this out in the straight-forward way, or you can recognize that (6-i) is a common factor. In the latter case, you have ...
... = (6-i)(5 + 3-i)
... = (6 -i)(8 -i)
This product of binomials is found in the usual way. Each term of one factor is multiplied by each term of the other factor and the results summed. Of course, i = √-1, so i² = -1.
... = 6·8 -6i -8i +i²
... = 48 -14i -1
... =
_____
A suitable graphing calculator will work these complex number problems easily.
