Ur teacher has disabled instant marking Your marks will appear after the due date. Use your calculator to work out 18? - 7.9
V 46 - 1.89
Write down all the figures on your calculator display.
Write your answer to

77

step-by-step explanation:

two data sets with the same median will not have the same varaibility

step-by-step explanation:

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