1. The domain of f(x) = -2x + 5 is
{1, 2, 3, 4, 5} what is the range?
2. Evaluate the function, f(x) = -5x + 7 given each of the following:
a) f(10) = b) Find x if f(x) is 32
+193 1. f(1)= -2(1) +5= -2+5 =3
f(2)= -2(2) +5= -4+5 = 1
f(3)= -2(3) +5= -6+5 = -1
f(4)= -2(4) +5= -8+5 = -3
f(5)= -2(5) +5= -10+5 = -5
⇒ range is { 3,1,-1,-3,-5 }
2.
a) f(10)= -5(10) +7= -50 +7= 43
b) x=32/f
+37146 2. f(10) = -5(10) + 7 = -50 +7 = - 43
f(x) =32
32 = -5x+7
25 = -5x
x = -5
