xy=1，x与y成______比例；x=y5，x与y成______比例；x3=4y，x与y成______比例；3x=y，x与y成______比例．
举一反三
- 已知x-y=0，x和y成（）比例；x÷6=y，x和y成（）比例；x+y=3，则x和y成（）比例。
- 下面关系式，（ ）中的x和y成反比例． A: x3=y B: 3x=y C: 3x=y D: xy=3
- 8x=y，y和x成______比例，t6=3s，t和s成______比例．
- （1）a的5倍等于b的1/3,（ab都不是0）,a与b成（）比例.（2）8/x=3y,那么x和y成()比例.
- 如下C程序的输出是什么？#include [stdio.h]void Func1 (int x, int y);void Func2 (int *x, int *y); int main() { int x = 3; int y = 4;Func1 (x, y); printf ("x = %d, y = %d\n", x, y);Func2(&x, &y); printf ("x = %d, y = %d\n", x, y);} void Func1 (int x, int y) { x = x + y; y = x - y; x = x - y; printf ("x = %d, y = %d\n", x, y);} void Func2 (int *x, int *y) { *x = *x + *y; *y = *x - *y; *x = *x - *y;;} A: x = 3, y = 4x = 3, y = 4x = 3, y = 4 B: x = 4, y = 3x = 4, y = 3x = 4, y = 3 C: x = 3, y = 4x = 3, y = 4x = 4, y = 3 D: x = 4, y = 3x = 3, y = 4x = 4, y = 3