please guys help please

See attachment for plot

Step-by-step explanation:

The attachment has enough information to solve for only question (4).

Solving (4), we have:

Required

Reflect over the x-axis

When a point (x,y) is reflected over the x-axis, the resulting point is (x,-y)

i.e.

So, we have:

==>

==>

==>

==>

So, we plot on a grid, the following points:

See attachment for plot

b) the dogs need to shift their focus to human scent.