Question

4. Sendo X = (-1; 0; 5; 12), qual o valor de y na função:
a) y = 2x - 4
b) y = 3-X​

Answer 1

4a)

X = -1 -> y = 2.(-1) - 4 = -2 - 4 = -6;
X = 0 -> y = 2.0 - 4 = 0 - 4 = -4;
X = 5 -> y = 2.5 - 4 = 10 - 4 = 6;
X = 12 -> y = 2.12 - 4 = 24 - 4 = 20.

4b)

X = -1 -> y = 3 - (-1) = 3 + 1 = 4;
X = 0 -> y = 3 - 0 = 3;
X = 5 -> y = 3 - 5 = -2;
X = 12 -> y = 3 - 12 = -9.