y = 2x + 9
y = 9x + 5
y = 5x + 5
y = 5x + 9
2007-09-04 09:38:21 · 4 answers · asked by wendiemail 1 in Science & Mathematics ➔ Mathematics
ALL equations of lines passing through (0, 9) are either:
(i) y = mx + 9, or (ii) x = 0.
Thus, of the extremely limited set of possibilities you provided,
y = 2x + 9 and y = 5x + 9 satisfy one (the first) of those two conditions.
QED
Live long and prosper.
2007-09-04 09:43:26 · answer #1 · answered by Dr Spock 6 · 0⤊ 0⤋
plug x=0 into each of them
y = 2x + 9 = 2*0 + 9 = 9 Good!
y = 9x + 5 = 9*0 + 5 = 5
y = 5x + 5 = 5*0 + 5 = 5
y = 5x + 9 = 5*0 + 9 = 9 Good!
Only the first and the last passes through (0,9)
2007-09-04 16:46:08 · answer #2 · answered by Amit Y 5 · 0⤊ 0⤋
y = 2x +9
and
y = 5x + 9
2007-09-04 16:45:46 · answer #3 · answered by Bear 2 · 0⤊ 0⤋
first and last
2007-09-04 16:46:35 · answer #4 · answered by Baysoc23 5 · 0⤊ 0⤋