For khan:)
2x + 5y > -6
- 4x + 3y = 2
Is (-1,7) a solution of the system?

Step-by-step explanation:

Slope of a line

m = \frac{\text{rise}}{\text{run}} = \frac{y_2 - y_1}{x_2 - x_1}

m=slope

(x_1, y_1)=coordinates of first point in the line

(x_2, y_2)=coordinates of second point in the line

In mathematics, the slope or gradient of a line is a number that describes both the direction and the steepness of the line