2007-10-08 10:11:29 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
graph 3x - 6y = 9 by finding the intercepts:
for x, let y = 0, getting 3x = 9, x = 3
for y, let x = 0, getting -6y = 9, y = -3/2
plot 3 on the x axis, -1 1/2 on the y axis, draw a line through them.
graph x - 2y = 3 the same way, getting exactly the same x and y intercepts. Of course! see how the 2nd equation is just the 1st one divided by 3. so every point on the line is a solution.
2007-10-08 10:17:13 · answer #1 · answered by Philo 7 · 1⤊ 1⤋
4
2007-10-08 17:13:13 · answer #2 · answered by Anonymous · 0⤊ 2⤋
I don't believe yahoo answers has a graphing calculator for me to work on... sorry
2007-10-08 17:13:21 · answer #3 · answered by MY truth will set you free... 3 · 2⤊ 0⤋
graph both equations
find intersect
plug in points
slove
2007-10-08 17:15:33 · answer #4 · answered by Anonymous · 0⤊ 1⤋
Give it a try before you ask.
2007-10-08 17:15:01 · answer #5 · answered by hmata3 3 · 0⤊ 0⤋