函数y＝kx+b的如右图,则方程kx+b等于0的解为?不等式kx+b＞0的解集为?函数y＝kx+b的如右图,则方程kx+b等于0的解为?不等式kx+b＞0的解集为?不等式kx+b-3＞0的解集为?

函数y＝kx+b的如右图,则方程kx+b等于0的解为?不等式kx+b＞0的解集为?函数y＝kx+b的如右图,则方程kx+b等于0的解为?不等式kx+b＞0的解集为?不等式kx+b-3＞0的解集为?
函数y＝kx+b的如右图,则方程kx+b等于0的解为?不等式kx+b＞0的解集为?
函数y＝kx+b的如右图,则方程kx+b等于0的解为?不等式kx+b＞0的解集为?不等式kx+b-3＞0的解集为?

函数y＝kx+b的如右图,则方程kx+b等于0的解为?不等式kx+b＞0的解集为?函数y＝kx+b的如右图,则方程kx+b等于0的解为?不等式kx+b＞0的解集为?不等式kx+b-3＞0的解集为?
kx+b等于0 y=0 所以就是函数与x轴的交点 1 所以解为1
kx+b>0 即函数在x轴的上面 所以 x<1
同理 kx+b<0的解集为 x>1

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Walt Disney's legacy is insurmountable. Disney's creations cannot be surpassed by any animation studio...

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Drop-shipping Wholesale Disney Clothing For Kids,wholesale belts
Drop-shipping Wholesale
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把A（1，0），B（0，3）带入y=kx+b
0=k+b
3=b
解得k= -3
b=3
所以y= -3x+3
① 令y=0 ② -3x+3＞0 ③ -3x+3-3＞0
-3x+...

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把A（1，0），B（0，3）带入y=kx+b
0=k+b
3=b
解得k= -3
b=3
所以y= -3x+3
① 令y=0 ② -3x+3＞0 ③ -3x+3-3＞0
-3x+3=0 x＞1 -3x＞0
x=1 所以原不等式的集解为x＞1 x＜0
所以原方程的解为x=1 所以原不等式的解集为x＜0

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