Astudent carries out a survey of favourite colours. a) can she find the average colour? give a reason for your answer b) can she find the range of colours?

yes because she just put all of the colors in a bar graph and then you will find the  average color

A) No, because average is a single number that gives a general idea about a set of numbers. And colours are not numbers.

B) No, because range is the deference between the largest number and the smallest number. And colours are not numbers.

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18

she gotta workk that a 2

step-by-step explanation: