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dexar [7]
4 years ago
10

If a varies directly with b and a = -2 when b =3 what is the constant of variation

Mathematics
1 answer:
lina2011 [118]4 years ago
3 0
A varies directly with b → a = kb where k is the constant of variation (i.e. slope)

-2 = k × 3 ← substitute values into the formula above

-2/3 = k ← result of dividing both sides by 3

Answer: k = -\frac{2}{3}
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Step-by-step explanation:

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The LCD for the fractions 1/3, 3/4, 5/32, and 8/9 is
tresset_1 [31]
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6 0
3 years ago
Find the values of x and y if (2x + y, 2) = (1, x - y). ​
m_a_m_a [10]

Answer:

We have, 2x+y=3 .......(1)

xy=1....(2)

In equation (2), we get

y=

x

1

..........(3)

y put in the equation (1)

2x+

x

1

=3

2x

2

+1=3x

2x

2

−3x+1=0

2x

2

−3x−1x+1=0

2x(x−1)−1(x−1)=0

x=1, x=

2

1

We take the value of x=1

x value put in equation (1)

2(1)+y=3

y=3−2

y=1

x=1

x and y value put (x+y)

x−y

=(1+1)

(1−1)

=2

0

=1

Hence, this is the answer

Was this answer helpful?

6 0
2 years ago
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