af(-3) = 3 - 2(-3) = 3 + 6 = f(0) = 3 - 20 = f(2.5) = 3 - 2*2.5 = 3 - 5 = -2
б1) f(x) = -13 - 2x = -1-2x = -2x = 10
2) f(x) = 3 - 2x = -2x = -x = 1.5
3) f(x) = 113 - 2x = 11-2x = 11x = -57
a
f(-3) = 3 - 2(-3) = 3 + 6 =
f(0) = 3 - 20 =
f(2.5) = 3 - 2*2.5 = 3 - 5 = -2
б
1) f(x) = -1
3 - 2x = -1
-2x = -2
x = 10
2) f(x) =
3 - 2x =
-2x = -
x = 1.5
3) f(x) = 11
3 - 2x = 11
-2x = 11
x = -57