Question

express y in term of x for the equation 4x+7y=14.check which of the point (0,2),(7/2,0)and(2,1)lie on the graph of this equation.

Answer 1

y in terms of x is y=2-4x/7
for point (0,2)
y = 2-4(0)/7 = 2
which is true
therefore (0,2) lie on the graph
for point (7/2,0)
y=2-4(7/2)/7=2-2=0
which is true
therefore (7/2,0) lie on the graph
fir point (2,1)
y=2-4(2)/7=2-8/7=6/7
which is not true
therefore (2,1) do not lie on the graph..

hope this helps:p

Answer 2

acc to this only 0,2 lie on graph and7/2,0 also lie