Find the value of the coefficient c, at which the straight line 2x-3y = c passes through the point (-1; 2).

In order to find the value of the coefficient c, at which the straight line 2x – 3y = c passes through the point with coordinates (-1; 2).

Let’s substitute x = -1 and y = 2 into the given equation and perform the actions.

2x – 3y = s;

2 * (-1) – 3 * 2 = s;

We just have to perform the actions on the left side of the equation.

-2 – 6 = s;

-8 = c.

We found the value of the variable c, write the equation of a straight line passing through a point with coordinates (-1; 2):

2x – 3y = -8.

Answer: the straight line 2x – 3y = -8 passes through the point with coordinates (-1; 2).