Edexcel Gcse Mathematics (Linear) - Algebra: Substitution Page 5
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8(a) Work out the value of 3p + 4q when p = 5 and q = –2
8.
………………………
(2)
(b) Given that y = 4x – 3, work out the value of x when y = 11
x = ………………………
(3)
(Total 5 marks)
when x = –3
9.
Work out the value of
5x + 1
..........................
(2)
(Total 2 marks)
3x – 4y
10. (a) Work out the value of
when
x = 3 and y = 2
.......................
(2)
–
p
(q
) 3
when p = 2 and q = –7
(b) Work out the value of
4
.......................
(3)
(Total 5 marks)
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