The value of y when x = -2 is read from the graph to be -3
how to find the value
The value is sought using points on the graph, and tracing
From x = -2, trace (draw imaginary line) to the straight line graphed,
At the point of intersection of the imaginary line and the straight line. Check the corresponding value on the y-axis that associates with the line
This value is read to be -3