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2 years ago

Extra Practice: Identify the point used in

Mathematics

1 answer:

expeople1 [14]2 years ago

4 0

Answer:

(a) (4, 5)

Step-by-step explanation:

The point-slope form of the equation for a line is ...

y -k = m(x -h) . . . . . . where m is the slope and (h, k) is the point

Comparing this to

y -5 = 1/2(x -4)

we see that k=5, m=1/2, h=4. Then the point is ...

(h, k) = (4, 5)

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Answer:

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Answer:

$r = \±\sqrt{14$

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Step-by-step explanation:

Given

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Required

Find all product of real values that satisfy the equation

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$2xr - 2x^2 -7= 7 -7$

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Multiply through by -1

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(1) No real roots:

This possibility does not apply in this case as such, would not be considered.

(2) One real root

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$a = 2$

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$4r^2 - 56 + 56= 0 + 56$

$4r^2 = 56$

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$r^2 = 14$

Take square roots

$\sqrt{r^2} = \±\sqrt{14$

$r = \±\sqrt{14$

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