The graph of the function y = -3.5x, passes through the point L (c; 2.8). Find the value of c.

By condition, the graph of the function y = -3.5x passes through the coordinate L (c; 2.8). It is a linear function y = kx + b, where b = 0 >> the graph of the function passes through the origin (0; 0). To find the point C at the coordinate L (C; 2,8), you need to know that the y coordinate in the first place is the value along the X axis (abscissa axis), and the second value along the Y axis (ordinate axis). Point C = x. Substitute the known variable y under the function y = -3.5x.
-3.5 = 2.8x
x = -3.5: 2.8
X = -0.8
C = – 0.8