(Solved): 2. Consider the function f(x)=x2+2x8. Determine the following without using a calculator and gra ...

2. Consider the function $f(x)=x^2+2x-8$. Determine the following without using a calculator and graph the function. (a) Find the $y$-intercept. Write it as an ordered pair. (b) Find the $x$-intercepts and write them both as ordered pairs. (c) Find the $x$-coordinate of the vertex, using the vertex formula. (d) Find the $y$-coordinate of the vertex and write the vertex as an ordered pair. (e) Give the equation of the axis of symmetry of $f(x)$. (f) Give the domain and range of $f(x)$. 1