Where does the graph of the line y = x - 2 intersect the x-axis

Answer 1

Okay, so the x-axis is defined as being at y=0 (look at a graph, the x-axis intersects the y-axis at y=0). Therefore, all you need to do is plug in 0 for y, and solve for x.

y=x-2

0=x-2 plug in 0 for y

+2 0=x-2 +2 add 2 to both sides

x=2

Therefore the line of y=x-2 intersects the x axis at (2,0)