Answer number 3 only and show your work:

1. Find The y-intercepts of the following equations: Ely: 3.x= x+10 bi y=5z"1Ux+2e C) 31 \"3129 m y=9x:-121 1. Find The roots of the following equations: 51" 1":{1'3114'4} III] y=-2|:x-51x-I54:| C1y=1012x100}[x+5] d1y=lx+3012 1. Find The vertex of The following equations: a: y=Tx-5]'+3 bi y=-TT_x+15)'+so c13=xt5 d1x=izE_i2 1. A rocket was launched into The air and was modelled by the following equation: 3, = 200:; _ 301;; +103 where h represents The height in metres andt represents The time in seconds. 1lI'Iuihen does The rocket hit the ground? 2. A. FooThall was kicked into the air and is modelled by The following equation: a = 25: + 5:: + I112 where h is The height in meters and t is The time in seconds. How high was the football when it was kicked? 3. A. candy:r company was looking at its prots and wanted to know The maximum number of candies that needed to be sold to make a maximum prot Write a poesible equation where it is easyr to nd The maximum prot and number of candies. Is the maximum prot represented by The xtralue or The yrvalue