474° Вправа 474Алгебра 8 клас Тарасенкова 2025 · § 12 · стор. 141

474. Які з точок A (3; 9), B (−3; −9), C (9; −3), D (9; 3), M (−5; 25), N (5; 10), P (7; 49), R (6; −36) належать графіку функції y = x²?

${\displaystyle A(3;9)}$: ${\displaystyle 9=}$${\displaystyle 3^2}$; ${\displaystyle 9=}$${\displaystyle 9}$ — так;

${\displaystyle B(-3;-9)}$: ${\displaystyle -9=}$${\displaystyle {(-3)}^2}$; ${\displaystyle -9\ne 9}$ — ні;

${\displaystyle C(9;-3)}$: ${\displaystyle -3=}$${\displaystyle 9^2}$; ${\displaystyle -3\ne 81}$ — ні;

${\displaystyle D(9;3)}$: ${\displaystyle 3=}$${\displaystyle 9^2}$; ${\displaystyle 3\ne 81}$ — ні;

${\displaystyle M(-5;25)}$: ${\displaystyle 25=}$${\displaystyle {(-5)}^2}$; ${\displaystyle 25=}$${\displaystyle 25}$ — так;

${\displaystyle N(5;10)}$: ${\displaystyle 10=}$${\displaystyle 5^2}$; ${\displaystyle 10\ne 25}$ — ні;

${\displaystyle P(7;49)}$: ${\displaystyle 49=}$${\displaystyle 7^2}$; ${\displaystyle 49=}$${\displaystyle 49}$ — так;

${\displaystyle R(6;-36)}$: ${\displaystyle -36=}$${\displaystyle 6^2}$; ${\displaystyle -36\ne 36}$ — ні.

Відповідь: ${\displaystyle A}$, ${\displaystyle M}$, ${\displaystyle P}$.