假设当x = 3时,y直接变化为x和y = 27,当y = 45时,如何找到x?

假设当x = 3时,y直接变化为x和y = 27,当y = 45时,如何找到x?
Anonim

回答:

#X = 5#

说明:

#“最初的陈述是”ypropx#

#“转换为等式乘以k常数”#

#“变异”#

#rArry = KX#

#“找到k使用给定的条件”#

#y = 27“当”x = 3#

#Y = kxrArrk = Y / X = 27/3 = 9#

#“等式是”颜色(红色)(条形(ul(|颜色(白色)(2/2)颜色(黑色)(y = 9x)颜色(白色)(2/2)|)))#

#“当”y = 45“然后”#

#45 = 9xrArrx =9分之45= 5#