[填空题]
Let $f(x)=\frac{5}{x+1}$ , for $x \neq-1$ .
1. For the graph of f , find:
1. the x -intercept;
2. the y -intercept; p(a,b) a = b =
3. the equation of the vertical asymptote.
Let g(x)=x-3 , for x $\in \mathbb{R}$ . The graphs of f and g intersect at points $\mathrm{A}$ and $\mathrm{B}$ .
2. Find the coordinates of A and B . A (a,b) a = b = B(c,d) c = d =
3. Find the equation of the straight line that passes through A and B , giving your answer in the form y=m x+c . y =
4. Write down the gradient of the line that is perpendicular to the line passing through A and B .
