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Neporo4naja [7]

3 years ago

10

Point (2,-4) is reflected across the line y= -1 what's the coordinates

1 answer:

kirill115 [55]3 years ago

8 0

Reflected coordinate=(2,2)

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sergiy2304 [10]

<h2>Answer:</h2>

a = 2, b = -18, c = 40

<h3>Step-by-step explanation:</h3>

$Given:\ Polynomial\ f(x)=ax^2+bx+c\ has\ zoroes\ 4\ aud\ 5$

$and\ f(-1)=60$

$Tofind:\ a,\ b,\ c$

$Solution:\ As\ 4\ and\ 5\ are\ zeroes\ so\ f(4)=f(5)=0$

$f(4)=a(4)^2+b(4)+c=0\Rightarrow16a+4b+c=0-(1)$

$f(5)=a(5)^2+b(5)+c=0\Rightarrow25a+5b+c=0$

$f(-1)=a(-1)^2+b(-1)+c=60\Rightarrowa-b+c=60-(3)$

$subtracting\ (1)\ from\ (2)$

$25a+5b+c-(16a+4b+c)=0\Rightarrow9a+b=0\Rightarrowb=-9a$

$subtracting\ (3)\ from(2):$

$25a+5b+c-(a-b+c)=0-60\Rightarrow24a+6b=-60$

$putting\ b=-9a$

$24a+6(-9a)=-60\Rightarrow24a-54a=-60\Rightarrow-30a=-60$

$a=\frac{-60}{-30}=2$ $\Rightarrow$ $a=2$

$b=-9a=-9\times2=-18$

$c=-a+b\neq60=-2-18+60=-20+60=40$

<em>I hope this helps you</em>

<em>:)</em>

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3 years ago

Which equation represents the linear relationship shown in the table?

DochEvi [55]

Plug your X values into the X spot in each equation and plug in the corresponding Y value into the Y spot in each equation. If the statement is true, then it is a linear relationship. If not, then it is not linear.

EXAMPLE:
y=3x+4
1. Plug it in
0=3(4)+4
2. Solve/Simplify
0=12+4
0=16
3.Is the statement true?
This statement is NOT true because 0 is not equal to 16
4. Answer
This is not a linear equation.

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WITCHER [35]

393 is 186 more than 207.
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This banana is 8 inches long.How many 0.4 inch slices of banana can be cut from this banana

kondaur [170]

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