Which of the points A (3, -2) B (-2.4) C (1.2), D (-3.1) belong to the graph of the function y = -2x + 4?

Let’s substitute the coordinates of each point into the equation of the graph of the function:

A (3, -2): -2 = -2 * 3 + 4; -2 = -2 – true, => point A (3; -2) belongs to the graph of the function;

B (-2.4): 4 = -2 * (- 2) + 4; 4 = 8 – not true, => point B (-2; 4) does not belong to the graph of the function;

C (1,2): 2 = -2 * 1 + 4; 2 = 2 – true, => point С (1; 2) belongs to the graph of the function;

D (-3.1): 1 = -2 * (- 3) + 4; 1 = 10 – not true, => point D (3; -2) does not belong to the graph of the function.

Answer. A (3; -2); C (1; 2).