Does the graph of the linear dependence y = 4-2x belong to the point: A (0; 4) B (-3; 10).

In order to find whether the graph of a linear function given by the equation y = 4 – 2x belongs to the points with coordinates A (0; 4) and B (-3; 10), we will alternately substitute the coordinates of these points into the equation of the function and check whether we get we are true equality.

If yes – the point belongs to the graph, if not – the point does not belong to the graph.

Let’s start at the first point:

A (0; 4):

4 = 4 – 2 * 0;

4 = 4 – 0;

4 = 4.

Point A (0; 4) belongs to the graph.

B (-3; 10):

10 = 4 – 2 * (-3);

10 = 4 + 6;

10 = 10.

Point B (-3; 10) belongs to the graph.