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ooizzyoo ooizzyoo
  • 29-03-2016
  • Mathematics
Answered

Pls help me on 20-23 and explain them.

Pls help me on 20-23 and explain them. class=

Verified Answer :

sofialittle sofialittle
  • 29-03-2016

i would make them quadratics, so for the first one make it y-3x-1=0 then factorise. Do the same for all of them then either factorise or use the quadratic formula to solve. you should end up with 2 answers - an x and y
then put those on a graph so say you end up with x=3 and y=4, plot a cross on the point (3,4)

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