# Math Help - Finding the equation of a line

1. ## Finding the equation of a line

write the equation of a line that is parallel to 3y+2x=12 and whose y-intercept is 2.

2. Originally Posted by blame_canada100
write the equation of a line that is parallel to 3y+2x=12 and whose y-intercept is 2.
1. The equation of a straight line is $y = mx+c$ where $m$ is the gradient and $c$ the y intercept

2. If a line is parallel the gradients must be equal.

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Use the two points above to answer the question

Spoiler:
$y = -\frac{2x}{3} + 2$

3. Originally Posted by blame_canada100
write the equation of a line that is parallel to 3y+2x=12 and whose y-intercept is 2.
The given line has a gradient of $- \frac{2}{3}$ and this will also be the gradient of the required line. Furthermore, you're given the y-intercept of the required line. Now recall that the equation of a line can be written y = mx + c ....

4. Here is a quick fix for this problem.
Any line parallel to $2x+3y=12$ has the form $2x+3y=C$.
Just determine $C$ so that the point $(0,2)$ is on that line.