Question

СРОНО ПОМАГИТЕ ДАНЫ ТОЧКИ P(1.-2) Q(2.-4) R(1.1) КАКИЕ ИЗ НИХ ЛЕЖАТ НА ГРАФИКЕ ФУНКЦИИ; A)y=-x^2 b) y=x^3 d)y=-2/x где делить та дробью с рисунком срочно

Answer 1

Точки Р(1;-2) и Q(2;-4) принадлежит функции у=-х^2 (парабола, ветви которой направлены вниз).
Точка R(1;1) принадлежит функции у=х^3 (кубическая парабола).

Answer 2

Points P(1, -2), Q(2, -4), R(1, 1) on the graph of the function

To determine which of the given points lie on the graph of the function, we need to substitute the x and y values of each point into the function and check if the equation holds true.

The given function options are: A) y = -x^2 + b B) y = x^3 + d C) y = -2/x

Let's substitute the x and y values of each point into each function and see which equations hold true.

For point P(1, -2): - Substituting x = 1 and y = -2 into option A: -2 = -(1)^2 + b - Simplifying the equation: -2 = -1 + b - Solving for b: b = -1 - Substituting x = 1 and y = -2 into option B: -2 = (1)^3 + d - Simplifying the equation: -2 = 1 + d - Solving for d: d = -3 - Substituting x = 1 and y = -2 into option C: -2 = -2/1 - Simplifying the equation: -2 = -2 - The equation is true.

For point Q(2, -4): - Substituting x = 2 and y = -4 into option A: -4 = -(2)^2 + b - Simplifying the equation: -4 = -4 + b - Solving for b: b = 0 - Substituting x = 2 and y = -4 into option B: -4 = (2)^3 + d - Simplifying the equation: -4 = 8 + d - Solving for d: d = -12 - Substituting x = 2 and y = -4 into option C: -4 = -2/2 - Simplifying the equation: -4 = -1 - The equation is not true.

For point R(1, 1): - Substituting x = 1 and y = 1 into option A: 1 = -(1)^2 + b - Simplifying the equation: 1 = -1 + b - Solving for b: b = 2 - Substituting x = 1 and y = 1 into option B: 1 = (1)^3 + d - Simplifying the equation: 1 = 1 + d - Solving for d: d = 0 - Substituting x = 1 and y = 1 into option C: 1 = -2/1 - Simplifying the equation: 1 = -2 - The equation is not true.

Based on the calculations, point P(1, -2) lies on the graph of the function y = -x^2 - 1.