) Prove that the following function f is injective (one-to-one): f:Z→Z, where f(x)=3x+2 Do this using the contrapositive of the definition of injective: Show that "for all a, b in the domain (ℤ), if f(a) = f(b) then a = b."

yes

yes yes yes

start with a line segment pq that we will copy. mark a point r that will be one endpoint of the new line segment. set the compasses' point on the point p of the line segment to be copied. adjust the compasses' width to the point q. the compasses' width is now equal to the length of the line segment pq.

step-by-step explanation:

whats the

answer: all of the odd numbers were opened

the first person was the one that was opening all of the lockers. since one is odd, this causes all of the odd number lockers to be opened in the end.