Hey there!
A line passing through a point
![(x_1,y_1)](https://img.qammunity.org/2019/formulas/mathematics/college/8y11w56k418r2w4xzy66gm7eq320oipizk.png)
and with a slope of
![m](https://img.qammunity.org/2019/formulas/physics/middle-school/hbuzeotuijzbt7at37fsbvthvy9dqjcpab.png)
will have the following equation in point slope form:
![y-y_1=m(x-x_1)](https://img.qammunity.org/2019/formulas/mathematics/college/lob8zuuisy2ohheuctatxwwco4ukatcrj3.png)
According to the given information, we know the following:
![(x_1, y_1)=(1,-8)](https://img.qammunity.org/2019/formulas/mathematics/middle-school/picml0jnzbd6ew4rbio9oap6ulnitaifiu.png)
![x_1=1](https://img.qammunity.org/2019/formulas/mathematics/middle-school/23bl9xskyy4wluwj5bq8f3lu3ltj6woylc.png)
![y_1=-8](https://img.qammunity.org/2019/formulas/mathematics/middle-school/a4spn5zx1cr6m0oz7x5cxtgu4g9z40flkt.png)
![m=-8](https://img.qammunity.org/2019/formulas/mathematics/high-school/7nbdfdji93ekrxecmngowgdr3n02i4n04a.png)
Now, we can just plug in this information into the equation of
![y-y_1=m(x-x_1)](https://img.qammunity.org/2019/formulas/mathematics/college/lob8zuuisy2ohheuctatxwwco4ukatcrj3.png)
![y-(-8)=-8(x-1)](https://img.qammunity.org/2019/formulas/mathematics/middle-school/m02xs0zjek6jix2jevo7ojzgte12y0oxys.png)
Simplify
![y+8=-8(x-1)](https://img.qammunity.org/2019/formulas/mathematics/middle-school/fokowm1lghj184bkqoh3v06udoyyp26wvk.png)
That's your answer. Have an awesome day! :)
~AgentCozmo4, Junior Moderator