Substitution Things to remember: There is always 1 mark just for writing down the numbers you have had to put into the expression. Your answer must be a number don’t forget to finish the sum – The question will always use the words out the value of” “Work Questions: 1. (a) Work out the value of 3x 4y when x = 3 and y = 2 – ........................................................... (2) (b) Work out the value of when p = 2 and q = –7 ........................................................... (3) (Total 5 marks) 2. Find the value of t² 4t when t = -3 – ........................................................... (Total 2 marks) 3. P = x² - 7x Work out the value of P when x = -5 P = ........................................................... (Total 2 marks) 4. T, x and y are connected by the formula
Substitution Things to remember: There is always 1 mark just for writing down the numbers you have had to put into the expression. Your answer must be a number – don’t forget to finish the sum The question will always use the words “Work out the value of” Questions: 1. (a) Work out the value of 3x – 4y when x = 3 and y = 2 ........................................................... (2) (b) Work out the value of when p = 2 and q = –7 ........................................................... (3) (Total 5 marks) 2. Find the value of t² – 4t when t = -3 ........................................................... (Total 2 marks) 3. P = x² - 7x Work out the value of P when x = -5 P = ........................................................... (Total 2 marks) 4. T, x and y are connected by the formula
Revision-Guide-aiming-for-3-4.docx