Sketch $y = -x^2 - 2x + 8$. Find its intercepts, axis of symmetry and turning point. State the ran

Question

Sketch $y = -x^2 - 2x + 8$. Find its intercepts, axis of symmetry and turning point. State the range of $y$.[5]

Accepted Answer

$x$-intercepts: $(-4,0),(2,0)$; $y$-intercept: $(0,8)$; Axis of symmetry: $x=-1$; Turning point: $(-1,9)$; Range: $y\le9$.

Functions and Graphs