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3 years ago

Which relation is a direct variation that contains the ordered pair (2, 7)?

1 answer:

8 0

Lets write equation of a function:

y = kx + n

Direct variation in simple is equation of a line which has n=0 or in other words which y to x ratio is k.

First option gets 7=7 but it isnt direct variation because n is not equal to 0

third option is indeed correct. once we implement coordinates (2,7) we get 7=7

Answer is
y = 7/2x

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Naddik [55]

Answer:

F=0.46N

Step-by-step explanation:

$F$ ∝ $\frac{1}{d^{2}}$ ,

$F=\frac{k}{d^{2} } \\$

$F=0.35N, d=8m\\$

$0.35=\frac{k}{8^{2} }$

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Answer:

1. b.(03)

2. A.(6,12)

3. C.(10,-1)

4. (-9,2)

Please mark me BrainIIest

Step-by-step explanation:

1.I will solve your system by substitution.

−x+2y=6;6y=x+18

Step: Solve−x+2y=6for x:

−x+2y+−2y=6+−2y(Add -2y to both sides)

−x=−2y+6

$\frac{-x}{-1} =\frac{-2y}{-1}$ Divide by -1

x=2y−6\

Well I did this problem differently I substitute

Step: Substitute2y−6for x in6y=x+18:

6y=x+18

6y=2y−6+18

6y=2y+12

6y+−2y=2y+12+−2y

4y=12

$\frac{4y}{4} =\frac{12}{4}$

y=3

Step: Substitute3 for y in x=2y−6:

x=2y−6

x=(2)(3)−6

x=0

Your final answer will be x=0 and y=3

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