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WorksheetsSoustava lineárních rovnic
Total questions: 20
Worksheet time: 30mins
Čím je potřeba vynásobit uvedenou rovnici, abychom u neznámé x získali číslo 8?
2x - 5y = 6
4
-4
2
-2
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
Do uvedené rovncie dosaď za neznámou x číslo 6 a vypočítej, jaké hodnotě se rovná neznámá y.
-3x + 5y = 27
(a)
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
Vyřeš soustavu rovnic:
x + y = 1
2x - 3y = 12
x = 3
y = -2
x = 2
y = -4
Vyřeš soustavu rovnic:
4x + 3y =5
8x + 7y = 9
x = 3
y = -4
y = -1
x = 2
Vyřeš soustavu rovnic:
-2x + 5y = 1
3x + 3y = 9
x = 3
x = 2
y = 5
y = 1
Solve:
3x - y = 11
x + y = 5
x = 4
y = 1
x = 4
y = -1
x = -4
y = 1
x = -4
y = -1
Solve:
2x + 3y = 5
x + 3y = 7
x = -2
y = 3
x = -2
y = -3
x = 2
y = 3
x = 2
y = -3
Solve:
2x + 5y = 29
x + 5y = 22
x = 7
y = 3
x = -7
y = -3
x = 7
y = -3
x = -7
y = 3
Solve:
3x + 5y = 4
4x - 5y = -18
x = -2
y = 2
x = -2
y = -2
x = 2
y = -2
x = 2
y = 2
Solve:
3x - 4y = 26
2x - 4y = 20
x = 6
y = -2
x = -6
y = -2
x = -6
y = 2
x = 6
y = 2
Solve:
2x + y = 16
4x - y = 2
x = 3
y = 10
x = -3
y = -10
x = -3
y = 10
x = 3
y = -10
Solve:
4x - y = 17
7x - y = 32
x = 5
y = 3
x = -5
y = 3
x = 5
y = -3
x = -5
y = -3
Solve:
3x + 2y = 15
7x + 2y = 19
x = 1
y = 6
x = -1
y = 6
x = 1
y = -6
x = -1
y = -6
Solve for (x , y)
-2x + 6y = 16
-4x - 3y = 2
(2 , 2)
(-2 , -2)
(-2 , 2)
(2 , 1)
Solve for (x , y)
5x + y = 9
10x − 7y = −18
(-4 , -1)
(-1 , -4)
(4 , 1)
(1 , 4)
Solve the simultaneous equations
a + b = 11
a - b = 3
a = 7, b = 4
a = -4, b = 7
a = 4, b = 7
a = 4, b = -7
Solve by substitution:
2x−3y=−1
y=x−1
(3, 4)
(4, 3)
(4, 4)
(3, 3)
Solve by elimination:
5x+y=9
10x−7y=−18
(4, 1)
(-1, 4)
(1, 4)
(4, -1)
