Question

Can you please help me I need 22 and 23

Answer 1

22. the coordinates are:

`Q(-8,7),R(-7,2),S(-8,13),t(-11,-2)`

So to know if the are parallel or perpendicular we have to calculate the slopes so:

For QR

`m=(2-7)/(-7-(-8))=-(5)/(1)=-5`

For ST

`m=(-2-13)/(-11-(-8))=-(15)/(3)`

So they are not parallel or perpendicular.

23. the coordinates are:

`Q(-1,4),R(-1,-9),S(11,-2),T(11,6)`

Now the slopes are

For QR

`m=(-9-4)/(-1-(-1))`

This is undefine so is a vertival line

for ST:

`m=(8-(-2))/(11-11)`

Is undefine so is also a vertical line, this means that they are parallel