Respuesta :
3y = 2x + 6
x + y = 7
y = 7 - x
3(7 - x) = 2x + 6
21 - 3x = 2x + 6
21 - 6 = 2x + 3x
15 = 5x
15/5 = x
3 = x
x + y = 7
3 + y = 7
y = 7 - 3
y = 4
Solution is (3,4)
x + y = 7
y = 7 - x
3(7 - x) = 2x + 6
21 - 3x = 2x + 6
21 - 6 = 2x + 3x
15 = 5x
15/5 = x
3 = x
x + y = 7
3 + y = 7
y = 7 - 3
y = 4
Solution is (3,4)
The graph/equation that best shows the number of litres of fruit syrup and water that Rex added to make the fruit punch is as follows;
graph of lines 3 y equals 2 x plus 6 and y equals minus x plus 7. Lines intersect at ordered pair 3, 4
How to form an equation?
He mixed x litres of fruit syrup with y litres of water to make a fruit punch.
The total number of litres of syrup and water he mixed was 7 litres. Therefore,
x + y = 7
y = - x + 7
Three times the number of litres of water he mixed was 6 more than twice the number of litres of syrup he mixed. Therefore,
3y = 2x + 6
3y - 2x = 6
Lets combine the equation
x + y = 7
-2x + 3y = 6
2x + 2y = 14
-2x + 3y = 6
5y = 20
y = 20 / 5 = 4
x = 7 - 4
x = 3
They intersect at ordered pair 3, 4
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