Graph f(x) = 3[x] + 9.

3x is your slope and +9 is your starting y-intercept

Step-by-step explanation:

3x slope means 3/1 which is go up 3 from 9 and over on to the right and that gives you your next point

so your first point os (0,9) and your second is (1,12)

10 cm

step-by-step explanation:

if the polygon is a rectangle, then the perimeter is x+x+y+y. using the values that you gave, the perimeter is 3+3+2+2=10cm.