## Precalculus: Mathematics for Calculus, 7th Edition

From the graph: vertex of parabola is (3,4) x-intercepts are (1,0) and (5,0) Find y-intercept, plug x=0: $y=-0^2+6\times0-5=-5$ Since vertex at (3,4) and parabola opens downward, maximum value is 4. Domain is all real numbers and range is from (-infinity, 4] as seen on the graph