find the equation of Line L in standard form L is parallel to Y=1/3X. Both lines are diagonal to each other. The other points are (2,5)

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- Apr 20th 2009, 10:34 AMgrettadotyapplied mathematics
find the equation of Line L in standard form L is parallel to Y=1/3X. Both lines are diagonal to each other. The other points are (2,5)

- Apr 20th 2009, 11:41 AMmasters
Hi grettadoty,

Quote:

Find the equation of line L in standard form.

I added the period to make it a sentence.

Quote:

L is parallel to y = 1/3 x.

I understand this part.

Quote:

Both lines are diagonal to each other

I don't know what that means.

Quote:

The other points are (2, 5)

This is just one point.

I'm going to assume you want to find the equation of line L which passes through point (2, 5) and is parallel to y = 1/3 x. Am I close?

If so,

The slope of y = 1/3 x is 1/3. So this means that the slope of any line parallel to it will also be 1/3.

Now use the point-slope form of the general equation to start with, using m = 1/3 and (x1, y1) = (2, 5)

$\displaystyle y-y_1=m(x-x_1)$

$\displaystyle y-5=\frac{1}{3}(x-2)$

$\displaystyle 3y-15=x-2$

$\displaystyle x-3y=-13$ Standard Form - Apr 20th 2009, 01:49 PMgrettadotythanks
Thanks for your reply

- Apr 20th 2009, 02:18 PMpickslides