Posted by **Sophie** on Wednesday, June 3, 2009 at 4:37pm.

Write an equation in slope-intercept form of the line whose parametric equations are:

x = (1/2)t +2/3 and y = t - 3/4.

a) y = 2x - 7/12

b) y = 2x + 7/12

c) y = -2x - 7/12

d) y = -2x - 25/12

I think it is D.....?

- Math -
**Reiny**, Wednesday, June 3, 2009 at 5:00pm
my equation is

y = 2x - 25/12

I tested it using t=0, so a point on it would be (2/3, -3/4)

none of the answers you give have that point on it, but my equation does.

check your typing.

- Math -
**Sophie**, Wednesday, June 3, 2009 at 5:01pm
never mind, i was right

- Math -
**MathMate**, Wednesday, June 3, 2009 at 5:03pm
I would proceed to eliminate t from the two equations by subtracting 2 times equation 1 from the second.

This gives me

y=2x-25/12

which does not correspond to any of the answers. So could you please check if the two equations have been entered correctly, or if the answers have been transcribed correctly.

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