Question

Represente graficamente a função f(x) = -x² + 2x

Answer 1

y = 2*(–2) – 1 → y = –4 –1 → y = –5
y = 2*(–1) –1 → y = –2 – 1 → y = –3
y = 2 * 0 – 1 → y = –1
y = 2 * 1 – 1 → y = 2 – 1 → y = 1
y = 2 * 2 – 1 → y = 4 – 1 → y = 3