Exercise 9 Page 190

In an ( x, y) ordered pair, the first number tells us the x-coordinate of the point and the second number tells us the y-coordinate of the point. To graph ( 7, 6), we first find 7 on the x-axis and make a mental note of this grid line. The x-coordinate 7 tells us to move 7 units to the right of the origin — the positive horizontal direction.

Next, we find 6 on the y-axis and follow this grid line until it collides with the grid line from our x-coordinate. The y-coordinate 6 tells us to move 6 units up from the origin — the positive vertical direction.

The point ( 7, 6) lies on the point at which these two grid lines intersect.