Rovnice o 2 neznámých - procvičování

Quiz
•
Mathematics
•
9th Grade
•
Hard
Veronika Kuncová
Used 14+ times
FREE Resource
7 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Čím je potřeba vynásobit uvedenou rovnici, abychom u neznámé x získali číslo 8?
2x - 5y = 6
4
-4
2
-2
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Máme rovnici:
x - 9y = 27
Jaký tvar bude mít rovnice, když za neznámou y dosadíme číslo 5?
x - 95 = 27
x - 5 = 27
x - 9 . 5 = 27
5 - 9 = 27
3.
FILL IN THE BLANK QUESTION
2 mins • 1 pt
Do uvedené rovncie dosaď za neznámou x číslo 6 a vypočítej, jaké hodnotě se rovná neznámá y.
-3x + 5y = 27
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Jakou rovnici získáme, když sečteme uvedené rovnice?
-10x + 4y = 15
10x - 2y = -10
4y - 2y = 15 - 10
4y = 15
6y = 15
4y - (-2y) = 15 + 10
5.
MULTIPLE SELECT QUESTION
3 mins • 1 pt
Vyřeš soustavu rovnic:
x + y = 1
2x - 3y = 12
x = 3
y = -2
x = 2
y = -4
6.
MULTIPLE SELECT QUESTION
3 mins • 1 pt
Vyřeš soustavu rovnic:
4x + 3y =5
8x + 7y = 9
x = 3
y = -4
y = -1
x = 2
7.
MULTIPLE SELECT QUESTION
3 mins • 1 pt
Vyřeš soustavu rovnic:
-2x + 5y = 1
3x + 3y = 9
x = 3
x = 2
y = 5
y = 1
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