2x - 5y = 10
2006-09-16 05:12:56 · 4 answers · asked by Rocstarr 2 in Science & Mathematics ➔ Mathematics
2x - 5y = 10
-5y = -2x + 10
y = (2/5)x - 2
(-5,-4), (0,-2), and (5,0)
2006-09-16 12:20:05 · answer #1 · answered by Sherman81 6 · 0⤊ 0⤋
First choose any two values of x, say 0 and 1.
Then first plug in 0 to get one value of y and then plug in 1 and get the other value of y. Then plot these two points, take a straight edge and draw a line through them.
Just to make sure you haven't made a silly mistake, consider taking a 3rd value of x and calculating a 3rd value of y and making sure it lies on that straight line.
BTW, can you tell why only two points suffice to drawing the graph of this equation???
2006-09-16 05:18:32 · answer #2 · answered by Nandan 1 · 0⤊ 0⤋
Let me instead show you how to find points.
Plug in any value you like for x.... let's say you plug in zero. Then solve:
2*0 - 5y = 10
-5y = 10
y = -2
So one point is (0, -2).
For additional points, just plug in other values for x.
I hope that helps!
2006-09-16 05:16:44 · answer #3 · answered by Bramblyspam 7 · 0⤊ 0⤋
solve for y... therefor you would end up with the slop intercept form (y=mx+b)... where m is the slope...and b is the y- intercept... and that would be all the info you need to graph that equation
2006-09-16 05:16:22 · answer #4 · answered by soccerboy12_2007 2 · 0⤊ 0⤋