First, we identify the points:
[tex]\begin{gathered} P_1=(-1,H(-1)) \\ P_2=(1,H(1)) \end{gathered}[/tex]
On the graph:
Looking at the points, we can see that P₁ is one unit down the x-axis, so we can say that its y-coordinate is -1. Then:
[tex]H(-1)=-1[/tex]
On the other hand, P₂ lies directly on the x-axis, so we can say that its y-coordinate is 0. Then:
[tex]H(1)=0[/tex]
