Answer:
1. B) 7
2. B) {y|y ≤ -1}
Step-by-step explanation:
1. Put -4 where x is in the function definition and do the arithmetic.
... 3 - (-4) = 3 +4 = 7
2. If the maximum function value is -1 and the values extend to -∞ from there, then the range is (-∞, -1]. In your notation, that is ...
... {y | y ≤ -1}
B and B
f(x) → 3 - x
to evaluate f(- 4 ) substitute x = - 4 into f(x)
f(- 4 ) = 3 - (- 4 ) = 3 + 4 = 7 → B
the range of a function are the values of y for the function
this function ( probably quadratic ) has a vertex at (0, - 1), that is the y-value is - 1
Since the function opens down then the values of y are tending to negative infinity
so the range of values for y are less than or equal to - 1 to negative infinity
{y | y ≤ - 1 } → B
