Answer:
a) i) The equation is satisfies of the values x = 6 and y=9
ii) The greatest possible value of 3x-2y is 20
iii) The least possible value of 3x – 2y is 2 and '0'
b)
The value of 5(a – 4b) = -55
Step-by-step explanation:
Given x and y are two numbers taken from the list below
5 6 7 8 9 10
i)
I will choose x = 6 and y = 9
3x - 2y = 3 (6) - 2(9) = 18 - 18 = 0
The equation is satisfies of the values x = 6 and y=9
ii)
we will choose x =10 and y = 5
3x - 2y = 3(10) - 2(5) = 30 -10 =20
The greatest possible value = 20
iii)
we will choose x =6 and y =8
3x - 2y = 3(6) -2(8) = 18-16 =2
we will choose x =6 and y =9
3x - 2y = 3 (6) - 2(9) = 18 - 18 = 0
b)
Given value of 5(a – 4b)
substitute a = -7 and b = 1
5(a – 4b) = 5(-7-4(1)) = 5 (-11) = -55
