Explanation:
To determine the equation of the line parallel to
, we need to first determine the slope of the given line.
A line in slope-intercept form is represented by the following:
![y = mx + b](https://img.qammunity.org/2021/formulas/mathematics/middle-school/mz6bvu74tuhpansv5wr4lvhm0e6gsu6nz7.png)
where
is the slope of the line and
is the y-intercept.
Rearranging the given line will give us the slope of the line:
![5x + 2y = 12](https://img.qammunity.org/2021/formulas/mathematics/middle-school/me7ajpr5thf1sij3jhg8cg0bk5dl9ir6nw.png)
![2y = -5x + 12](https://img.qammunity.org/2021/formulas/mathematics/middle-school/3b8ti701vsu8wggt03xjlyxsndtv5kkn11.png)
![y = -(5)/(2)x + 6](https://img.qammunity.org/2021/formulas/mathematics/middle-school/8suxbfekvhw73thns7v2pp3s42r453ts0v.png)
From this, since we know the lines are parallel, if the slope of the given line is
, then the slope of the line we are constructing must also be
.
We can now start to construct the line with the same slope-intercept form:
![y = mx + b](https://img.qammunity.org/2021/formulas/mathematics/middle-school/mz6bvu74tuhpansv5wr4lvhm0e6gsu6nz7.png)
![y = -(5)/(2)x + b](https://img.qammunity.org/2021/formulas/mathematics/middle-school/btjttowsq2bcssfidxuy3msk8klmpzhwrf.png)
To determine the y-intercept,
, we can plug in the point
since we are told from the problem statement that this parallel line runs through it:
![y = -(5)/(2)x + b](https://img.qammunity.org/2021/formulas/mathematics/middle-school/btjttowsq2bcssfidxuy3msk8klmpzhwrf.png)
![4 = -(5)/(2)(-2) + b](https://img.qammunity.org/2021/formulas/mathematics/middle-school/gpfet8k9rrph0mvbhthk6phka650qgw46w.png)
![4 = 5 + b](https://img.qammunity.org/2021/formulas/mathematics/middle-school/9oinpodey892i644wblnycmfnufpm64kwk.png)
![b = -1](https://img.qammunity.org/2021/formulas/mathematics/middle-school/gj83prw1o4nwmqxo5iewhrojgcn20hwtuh.png)
Finally, we have our parallel line:
![y = -(5)/(2)x - 1](https://img.qammunity.org/2021/formulas/mathematics/middle-school/mysu12q05p2brmq2v0lm2fin371il1zu1e.png)
If this line needs to be in standard form, we can rearrange it a little:
![2y = -5x - 2](https://img.qammunity.org/2021/formulas/mathematics/middle-school/k5zs6aspmdeuhnv6jyvww9z26d5k9my6ui.png)
![5x + 2y = -2](https://img.qammunity.org/2021/formulas/mathematics/middle-school/s3b2j86dlyohipu6jnntk7uscr9lhfbeqz.png)