Question

Find the vertex form of the function then find the following a) intercepts b) vertex c) maximum or minimum d) range

Answer 1

Vertex form; y = 5(x - 3)² - 85
x-intercept; (3, +√17, 0) , (3 -√17, 0)
y-intercept; (0, -40)
minimum value at -85
range; [-85, ∞), {y|y ≥ -85}

hope this helps, God bless!