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Delvig [45]
3 years ago
14

use slope to determain weather or not quadrilateral ABCD with A(3, 1) B(6, -1) C(1, -3) and D(-2, -1), is a parallelogram

Mathematics
1 answer:
Ksivusya [100]3 years ago
8 0

Answer:

d

Step-by-step explanation:

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Find the x-intercepts of the parabola with
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Answer:

x-intercepts are (0, 0) and (-6, 0)

Step-by-step explanation:

equation of a parabola in vertex form:  y = a(x - h)² + k

where (h, k) is the vertex

Substituting the given vertex (-3, -18) into the equation:

y = a(x + 3)² - 18

If the y-intercept is (0, 0) then substitute x=0 and y=0 into the equation and solve for a:

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Therefore, y = 2(x + 3)² - 18

To find the x-intercepts, set the equation to 0 and solve for x:

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Add 18 to both sides:     2(x + 3)² = 18

Divide both sides by 2:    (x + 3)² = 9

Square root both sides:      x + 3 = ±3

Subtract 3 from both sides:  x = ±3 - 3

so x = 3 - 3 = 0  

and  x = -3 - 3 = -6

So x-intercepts are (0, 0) and (-6, 0)

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2 years ago
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Answer:

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Step-by-step explanation:

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IF the x values would have been the same (instead of the y values), then u would have had a vertical line with an undefined slope.
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