Do 1200 minus 140 and then divide the answer by 20
For this case what you should do is evaluate values of x in the function and verify that they meet the result of f (x) shown in the graph.
The answer is
f (x) = - 2lxl +1
notice that
f (1) = - 2l1l + 1 = -1
f (-1) = - 2l-1l + 1 = -1
Both comply with the value of f (x) shown in the graph
answer
f (x) = - 2lxl +1
These cannot be solved.- 3 unknowns require 3 equations
An expression for that would be s + 0.05s, or 1.05s.
