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2 years ago

If the point is reflected across the x-axis, what is the location of the new point?

Mathematics

2 answers:

Neporo4naja [7]2 years ago

7 0

Answer:

A) (5,3)yyhrfeusirjukgs

jeka942 years ago

4 0

Answer:

Step-by-step explanation:

Under a reflection in the x- axis

a point (x, y ) → (x, - y ), thus

A(5, - 3 ) → A'(5, 3 )

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Sever21 [200]

Answer:

$\{x=\frac{19-\sqrt{409} }{2}\ , \ x=\frac{19+\sqrt{409} }{2}\}$

Step-by-step explanation:

x² = 19x + 12

⇔ x² - 19x - 12 = 0

Calculating the discriminant :

b² - 4ac = (-19)² - 4×1×(-12) = 409

The discriminant is positive ,then the equation has two solutions.

$x=\frac{19-\sqrt{409} }{2} \ \ or\ \ x=\frac{19+\sqrt{409} }{2}$

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