Write an equation of the direct variation that includes the point (–10, –17).

Mathematics
Tutor: None Selected Time limit: 1 Day

Write an equation of the direct variation that includes the point (–10, –17).

a.  y=  1 7/10x

b.  y= -1  7/10x

c.  y= -1/17x

d.  y= 10/17x

Apr 27th, 2015

We know that when x = -10, y = -17;  So, if we put those into the direct variation equation " y = kx " we get...

-17 = k (-10)

We divide by -10

-17/-10 = k

Now we put that value of "k" into the formula and we get A ( y = 1 7/10 x)

Apr 27th, 2015

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Apr 27th, 2015
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Apr 27th, 2015
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