y=mx+cy = mx + cy=mx+c
m=−2m = -2m=−2 x=12x = 12x=12 c=−7c = -7c=−7
Work out the value of yyy.
Hence, work out the value of y y\,y when x=13x = 13x=13.
296 exam-style questions on OCR GCSE Maths Substitution. Each one has a worked solution and a mark scheme showing where the marks go.