Wednesday

October 22, 2014

October 22, 2014

Posted by **Melissa** on Saturday, April 7, 2012 at 2:12pm.

Determine which line is parallel to the line with Cartesian equation 2x +3y + 5=0

a) r=(-1,-1) +s(2,3), seR

b) x=3t-1, y=-2t-1, teR

c) x=2t-1, 3t-1, teR

d) none of the above.

I chose D, none of the above because none of them are multiples of the given equation 2x+3y+5=0.

Thank you!

- Calculus -
**Reiny**, Saturday, April 7, 2012 at 3:18pmlook at b) , and sub into the line equation

LS = 2x + 3y + 5

= 2(3t-1) + 3(-2t-1) + 5

= 6t-2 -6t-3 + 5

= 0

= RS

not only are they parallel, but they represent the same line

**Answer this Question**

**Related Questions**

Calculus - Determine the equation of the line through the origin and the point P...

Calculus - Let L1 be the line with the vector equation r= (-2,3) +s(-1,3), seR. ...

Calculus - A line has Cartesian equation 3x-2y+3=0 .Determine a direction vector...

Calculus - Determine a vector equation for the line through the points (-1, 4) ...

Pre-Calculus - Determine the equation of a line that passes through (2,2) and is...

Math - This question makes reference to an orthonormal basis (i,j), and an ...

Math - PLease help me with this: What kind of line is created when you graph the...

math, algebra - the problem reads: Write the equation of the line which passes ...

Trig - A curve with polar equation r=(8)/7sinx + 36cosx represents a line. This ...

Calculus - Find an equation of the line that is tangent to the graph of f and ...