I WILL MARK BRAINIEST IF ANSWERED RIGHT AND ASAP AND YOU WILL GET MEGA POINTS WHICH IS 99 POINTS!

2 answers:

4 0

<span> The coordinates of point P on a coordinate grid are (−5, −6). Point P is reflected across the y-axis to obtain point Q and across the x-axis to obtain point R. What are the coordinates of points Q and R? Q(5, 6) and R(−5, −6) Q(−5, −6) and R(5, 6) Q(−5, 6) and R(5, −6) Q(5, −6) and R(−5, 6). </span><span>
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Llana [10]2 years ago

3 0

88 i think
im sorry if its wrong not the best at math

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Someone please help me with these 2 problems :(

k0ka [10]

If the discriminant b^2-4ac is 0, then you have TWO EQUAL, REAL ROOTS.

If you're given the x-intercepts, you can determine the factors of the polynomial as follows: Take -3, change the sign and write (x+3). Take 5, change the sign and write (x-5). Then the eq'n of the parabola is

f(x) = (x+3)(x-5) = x^2 - 2x -15, in which a=1, b = -2 and c= -15.

You can find the x-coordinate of the vertex, which is also the equation of the axis of symmetry, using

x= -b / (2a). Here, x = -(-2) / (2[1]), or x = 1

Find the y-coordinate by subbing 1 for x in the equation above:

y = (1)^2 - 2(1) - 15 = 1 - 2 - 15 = -16

The vertex is at (1, -16) and the equation of the axis of symm. is x = 1.

7 0

2 years ago

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KatRina [158]

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