Math Help? Please see details!
I need some Math help that has to do with sketching the graph of each line.
(I’ll have to sketch something like, -2x=5-y
I need to see it visually though, so I’ll send a link to an online whiteboard to whoever offers to help me.
I’m not EXPECTING help, I’m just wondering if anyone has the kindness to help me with this.
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8 Answers
Try WolframAlpha Type in the equation and it will plot the line.
5 – y + 2x = 0
Y -5 = 0
x = 0
so I can’t help you much more than to say plot the intecepts. of x and y. (0, 5) ... or what is needed to make x =0 and y= 0
@Lightlyseared
Thats what I’m using now, for my equation problems.
But its giving me answers like, ” 4 = 4–4 n”
O_O
You start by isolating y, in other words “y=—-”
The coefficient of X is the slope of the line. The other number, either + or -, is the Y-intercept, where the line crosses the Y-axis. If the coefficient is positive, it rises from left top right. If it is negative it slopes down from left to right.
The slope equals rise over run, so with a coefficient of 2, it goes up (rise) 2 for every move to the right (run).
That’s as much as I can help you wit your homework.
Look up slope intercept form. I think it is the easiest way to visualize or plot a straight line.
I agree with @tranquilsea. Relating the general algebraic form, ax + by + c = 0, to its graph is not very intuitive. The slope-intercept form of the equation, on the other hand, y = mx + b, is instantly visualizable: The slope m tells you the direction and steepness of the line, while the intercept b indicates how much the line is shifted vertically with respect to the origin.
Using basic algebra you should be able to easily convert one form to the other.
@NostalgicChills, if you don’t my asking, which whiteboard software were you referring to?
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