For this case we have that by definition, the equation of a line in the slope-intersection form is given by:
![y = mx + b](https://img.qammunity.org/2020/formulas/mathematics/high-school/fc4cgm6covys37zv2opmmp9ps4jxyjepvh.png)
Where:
m: It's the slope
b: It is the cut-off point with the y axis
According to the statement we have the following equation:
![y = - \frac {1} {2} x-4](https://img.qammunity.org/2020/formulas/mathematics/middle-school/dj8pcmpz87rad1qibxwad4zrjiyy0bsa2z.png)
The slope is:
![m = - \frac {1} {2}](https://img.qammunity.org/2020/formulas/mathematics/high-school/fbzk5xtav0v0gbysra60241sz5cjyxynzx.png)
By definition, if two lines are parallel then their slopes are equal. Thus, a parallel line will have slope
. Therefore, the equation will be of the form:
![y = - \frac {1} {2} x + b](https://img.qammunity.org/2020/formulas/mathematics/middle-school/ixy86xtsf6fjra2lldhcykysuctmttzk8b.png)
In the statement they tell us that
substituting we have:
![y = - \frac {1} {2} x-1](https://img.qammunity.org/2020/formulas/mathematics/middle-school/vryxl5l3bgz6tuuu0vc5g80gr65ifhh9gw.png)
Answer:
The equation is:
![y = - \frac {1} {2} x-1](https://img.qammunity.org/2020/formulas/mathematics/middle-school/vryxl5l3bgz6tuuu0vc5g80gr65ifhh9gw.png)