3 years ago

Which equation represents an inverse variation? O y = 2x Oy- O yo X O y = -5x

Mathematics

1 answer:

olga nikolaevna [1]3 years ago

6 0

O y = 2x is the answer

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Which system of equations would have the same solution as the system: x+y=5 3x+2y=10

Alex73 [517]

{ x + y = 5 * ( -3 )
3x + 2y = 10

- 3 x - 3 y = - 15
3 x + 2y = 10
_______________
- y = - 5 * ( -1 )

y = 5

For x :

3 x + 2 y = 10

3 x + 2 * ( 5 ) = 10

3 x + 10 = 10

3 x = 10 - 10

3 x = 0

x = 0 / 3

x = 0

X = 0 and y = 5

hope this helps!

5 0

3 years ago

Need help on 5 and 6

lianna [129]

Well the equation for slope is $\frac{ y_{2}- y_{1} }{ x_{2} - x_{1} }$

number 5
$\frac{-1-(-2)}{3-(-2)} = \frac{1}{5}$
which means the slope is $\frac{1}{5}$