y = | x - 4 |

Question

graph equation

Answer 1

y = |x - 4| is the same as:

y = x - 4 when x is more or equal to four.
y = 4 - x when x is less than four.

Thus, when x >= 4, you just need to plot y = x - 4. and when x < 4, you just need to plot y = 4 - x