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3 years ago

Solve for x and y: x+y=5 x−y=a

Mathematics

1 answer:

9966 [12]3 years ago

5 0

Answer:

x=5/2 + a/2, y= 5/2 - a/2

Step-by-step explanation:

We can solve this system using addition of the equations

x+y=5

x-y=a

2x =(5+a)

x=(5+a)/2= 5/2 +a/2

x=5/2 +a/2

x-y=a

y = x - a , x=5/2 + a/2

y= 5/2 + a/2-a

y= 5/2 - a/2

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Direct variation or not a direct variation y=5/x

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Answer:

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Step-by-step explanation:

The equation for x and y in direct variation is

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y = $\frac{5}{x}$ is not in this form, thus not direct variation.

The equation for x and y varying inversely is

y = $\frac{k}{x}$ ← k is the constant of variation

y = $\frac{5}{x}$ is in this form and represents inverse variation

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almond37 [142]

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3 years ago

Solve this system of equations. y=2x-5 y=-2x+3

Alinara [238K]

Answer:

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Step-by-step explanation:

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