Question

4道函数题（初二,1.已知函数y=2x+1-3m是正比例函数,则m为?2.已知函数y=（m-1）x（x头上有个m的2次方

Answer 1

1.1-3m=0

m=1/3

2.m-1/=0,m^2=1

m/=1,m=+-1

m=-1

3.m+2/=0,

m^2-3=1

m/=-2,m=+-2

m=2

4.B(1,3^1/2),(1,-3^1/2)(-1,3^1/2)(-1,-3^1/2),(3^1/2,1),(-3^1/2,1)(3^1/2,-1)(-3^1/2,-1)