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Nezavi [6.7K]
3 years ago
7

is it always true that the y-values of a quadratic function have opposite signs on either side of a zero of the function? Explai

n Please
Mathematics
1 answer:
Anika [276]3 years ago
7 0
It is not always true because some of them do have a function
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Step-by-step explanation:

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Answer the questions by drawing on the coordinate plane below.
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Coordinates of the given triangle ΔPQR P(1,-1), Q(3,-2), R(3,-4).

a) Let us discuss the rule for rotation of 90° clockwise about the origin.

If given coordinate is (h,k) is rotated 90° clockwise about the origin the position of rotated coordinate will be (k, -h).

x and y coordinates would switch their values and after switching x any values, the y value of the coordinates would reverse in sign.

So, the coordinates of rotated ΔPQR P(1,-1), Q(3,-2), R(3,-4) would become

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Q(3,-2) --> Q'( -2,-3)

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b) If given coordinate is (h,k), the coordinates after reflection across the x-axis would besome (h,-k). (Just change in the sign of y-coordinate).

So, the coordinates of rotated ΔPQR P(1,-1), Q(3,-2), R(3,-4) would become

P(1,-1) --> P"(1,1)

Q(3,-2) --> Q"( 3,2)

R(3,-4) --> R"(3,4)



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1. Which equation can you use to find the value of x?
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