Mathematics
daijahjuran
22

Let x = 3y + 4z + 2. what happens to the value of x if the value of y is increased by 4 and the value of z is decreased by 2?

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(1) Answers
andre84151

subsitute y with y+4 subsitute z with z-2 xold=origianal value of x xnew=new value of x so xold=3y+4z+2 xold=3y+4z+2 xnew=3(y+4)+4(z-2)+2 xnew=3y+12+4z-8+2 xnew=12-8+3y+4z+2 xnew=4+3y+4z+2 xnew=4+(3y+4z+2) xnew=4+(xold) so the value of xold increased by 4 x increased by 4

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