Work Step by Step
The first bracket represents the settings for the x-axis while the second represents the settings for the y-axis. For each bracket, the first two numbers represent the starting and ending coordinates. The third represents the distance between ticks. Thus, the given viewing rectangle means: (i) The x-values vary from -20 to 80. The distance between ticks is equal to 10 units. This means that there are 2 ticks to the left of 0 and 8 ticks to the right. (ii) The y-values vary from -30 to 70. The distance between ticks is equal to 10 units. This means that there are 3 ticks below 0 and 7 ticks above. The graph that meet these settings is the one in Option (b).