A) x and y are two numbers taken from the list below. 5
6
7
8
9
10
(i) What values of x and y will make 3x – 2y equal zero? x = 6
y = 9
(ii) Work out the greatest possible value of 3x - 2y.
I
(iii) Work out the least possible value of 3x - 2y.
20
b) Find the value of 5(a - 4b) when a = -7 and b = 4

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.

c. side angle side. u shares the same sides