given that f is a linear function , f (4)=-5 and f (0)=3, write the equation that defines f

i can find the averate rate of change and is -2but i cannot find the y int...

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- Mar 24th 2010, 06:09 PMalessandromangionegiven that f is a linear function , f (4)=-5 and f (0)=3, write the equation that def
given that f is a linear function , f (4)=-5 and f (0)=3, write the equation that defines f

i can find the averate rate of change and is -2but i cannot find the y int... - Mar 24th 2010, 07:07 PMskeeter
- Mar 25th 2010, 04:11 AMHallsofIvy
Any linear function can be written as f(x)= mx+ b. Knowing that f(4)= -5 tells you that 4m+ b= -5 and knowing that f(0)= 3 tells you that 0(m)+ b= 3. Solve those two equations for m and b.