Asked by joseph
hi, i'm having trouble understanding the concept of eliminating the parameter to obtain an equation in x and y alone. can anyone please solve this problem and explain it? thank you so much.
x = 3T-4
y= = 1-2T
(0<t<3) those signs are actually less than or equal to.
x = 3T-4
y= = 1-2T
(0<t<3) those signs are actually less than or equal to.
Answers
Answered by
Reiny
Solve each equation for T
from the first:
3T = x+4
T = (x+4)/3
from the second
2T = -y + 1
T = (-y+1)/2
but T=T
(x+4)/3 = (-y+1)/2
cross-multiply and simplify to get
2x+3y = -5
from the first:
3T = x+4
T = (x+4)/3
from the second
2T = -y + 1
T = (-y+1)/2
but T=T
(x+4)/3 = (-y+1)/2
cross-multiply and simplify to get
2x+3y = -5
Answered by
joseph
THANK YOU. i just really needed that bit of a start; now i can finish the rest. thanks again!
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