Activity 1. Sketch the two cycles of the graph (starting from x = 0) of the given function. Indicate the amplitude, period, phase shift, domain and range and vertical asymptotes.
upts
upts
1. y = 4 sinx
2. y = 7 cos 2x
3. y = -4cos (x --
+2
4. y = - sec x
5. y = tan 2x

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling