Question

Function f graphed at the right is linear.
A. The x-coordinate, (1,0), tells us that f(1)=
B. The y-coordinate, (0,3), tells us that f(0=
C. Use the information from a and b (above) to determine which one is the graph of f.
i. f(x)= -1/3x+3
ii. f(x)= -1/3x+1
iii. f(x)= -3x+1
iv. f(x)= -3x+3
d. Explain how you determined your answer for question 1c (above).
e. Verify that your answer for question 1c is correct by determining the values of f(0) and f(1) for the function you chose.

Answer 1

A clearly, f(1) = 0
B and f(0) = 3
C So, f(x) = 3 - 3x
Since f(0) = 3, the function will be mx+3
Just find m such that m+3 = 0 since f(1) = 0