Вопрос
1 y=x^2-2 x-8 2 y=2 x^2-3 x 3 y=x^2-4 x+7 4 y=-x^2+2 x+8 5 y=-2 x^2-5 x-2 6 y=x^2+3 x
Решения
4.2
(320 Голоса)
Прохор
мастер · Репетитор 5 лет
Ответ
Let's analyze each equation to understand the type of graph they represent:1.
- This is a quadratic equation in the form
with
,
, and
. - The graph is a parabola opening upwards.2.
- This is a quadratic equation in the form
with
,
, and
. - The graph is a parabola opening upwards.3.
- This is a quadratic equation in the form
with
,
, and
. - The graph is a parabola opening upwards.4.
- This is a quadratic equation in the form
with
,
, and
. - The graph is a parabola opening downwards.5.
- This is a quadratic equation in the form
with
,
, and
. - The graph is a parabola opening downwards.6.
- This is a quadratic equation in the form
with
,
, and
. - The graph is a parabola opening upwards.In summary, the first, second, third, and sixth equations represent parabolas opening upwards, while the fourth and fifth equations represent parabolas opening downwards.