Find the sum of the slope and $y$-intercept of the line through the points $(7,8)$ and $(9,0)$.
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Find the sum of the slope and $y$-intercept of the line through the points $(7,8)$ and $(9,0)$.
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
32
Find the sum of the slope and $y$-intercept of the line through the points $(7,8)$ and $(9,0)$.
train