Review slope-intercept form and how to use it to solve problems.
Log in Nikki Mupp 7 years agoPosted 7 years ago. Direct link to Nikki Mupp's post “How do you an equation in...” How do you an equation into slope intercept from slope and y intercept? • (18 votes) Kim Seidel 7 years agoPosted 7 years ago. Direct link to Kim Seidel's post “It's quite easy.Slope-in...” It's quite easy. (56 votes) eaco5460 3 years agoPosted 3 years ago. Direct link to eaco5460's post “This has no use in the re...” This has no use in the real world. • (8 votes) T̷h̷e̷C̷o̷d̷i̷n̷g̷L̷e̷g̷e̷n̷d̷ INACTIVE 3 years agoPosted 3 years ago. Direct link to T̷h̷e̷C̷o̷d̷i̷n̷g̷L̷e̷g̷e̷n̷d̷ INACTIVE's post “Slope? It can be used lat...” Slope? It can be used later to calculate really important things. (13 votes) Louis Kwan 7 years agoPosted 7 years ago. Direct link to Louis Kwan's post “I still don't know how to...” I still don't know how to graph, this is so hard... :( • (4 votes) Victor Dang 7 years agoPosted 7 years ago. Direct link to Victor Dang's post “y=mx+by=ym=any number...” y=mx+b y=y (10 votes) Martin Calkins 6 years agoPosted 6 years ago. Direct link to Martin Calkins's post “how can i graph lines wit...” how can i graph lines without having the y intercept on the graph? • (4 votes) Kim Seidel 6 years agoPosted 6 years ago. Direct link to Kim Seidel's post “You can graph any line fr...” You can graph any line from its equation by finding and graphing any 2 points that satisfy the equation. Alternatively, if you know the slope and any point on the line you can graph the point and use the slope to find more points on the line. You can find more details in the lessons at this link: https://www.khanacademy.org/math/algebra/two-var-linear-equations (8 votes) Nya Richards 6 years agoPosted 6 years ago. Direct link to Nya Richards's post “I don't understand this.” I don't understand this. • (8 votes) jalohny 4 years agoPosted 4 years ago. Direct link to jalohny's post “you said that two years a...” you said that two years ago i want to see if you will respond to my reply what grade are u in (0 votes) jcontrerasalejo0747 3 years agoPosted 3 years ago. Direct link to jcontrerasalejo0747's post “how do you find the slope” how do you find the slope • (3 votes) Hannah Alisse 3 years agoPosted 3 years ago. Direct link to Hannah Alisse's post “Here's my explanation :)...” Here's my explanation :) (5 votes) Osman Hussein 7 years agoPosted 7 years ago. Direct link to Osman Hussein's post “i don't understand how to...” i don't understand how to put x intercept and y intercept in an equation • (4 votes) Hannah Feng 5 years agoPosted 5 years ago. Direct link to Hannah Feng's post “You can put the equation ...” You can put the equation into standard from (Ax+By=C) and then convert it into slope-intercept form (y=mx+b). I'm sure there are other ways to attack this problem, but this is how I learned it and it's quite efficient. Hope this helps! (3 votes) abduladilsunnat 9 months agoPosted 9 months ago. Direct link to abduladilsunnat's post “Does x=my+b count as a sl...” Does x=my+b count as a slope-intercept form? • (5 votes) Bob202BANG 2 months agoPosted 2 months ago. Direct link to Bob202BANG's post “No. You will learn later ...” No. You will learn later why when learning functions, but slope-intercept form must always be y=mx+b. (3 votes) Mi 9 months agoPosted 9 months ago. Direct link to Mi's post “Does anyone know a good w...” Does anyone know a good way to solve the linear equations word problems? I don't know how how to find the b in y=mx+b • (2 votes) Ian Pulizzotto 9 months agoPosted 9 months ago. Direct link to Ian Pulizzotto's post “The b is the value of the...” The b is the value of the quantity represented by y in the word problem, when the quantity represented by x in the word problem is zero. For example, if x represents time, then the b can be thought of as the initial (or starting) value of the quantity represented by y. For example, if y represents the total monthly charge for x kilowatt-hours electricity, and the company charges a constant rate per kilowatt-hour plus a constant monthly service fee, then the b represents the service fee. Have a blessed, wonderful day! (6 votes) jasonsnavely2800 4 months agoPosted 4 months ago. Direct link to jasonsnavely2800's post “I'm having a difficult ti...” I'm having a difficult time determining the polarity of the slope in some of the word problems. For instance, a problem with the Y axis being number of pages left to read in a book, and X being the number of hours reading. I sometimes end up with the signs for the slope flipped because I'm thinking of the total number of pages remaining to be read as a negative value. I'm not sure why I'm doing this. Is there something else I could think about to keep me from flipping these signs? • (3 votes) FreeRadical 4 months agoPosted 4 months ago. Direct link to FreeRadical's post “The key is to keep the or...” The key is to keep the order in which you use your points. (4 votes)Want to join the conversation?
Slope-intercept form: y = mx + b
The "m" is the slope. The "b" is the y-intercept.
So, if the problem tells you the slope = 3/4 and the y-intercept is -5, then you can create the equation by:
-- swap out "m" and put in 3/4
-- swap out "b" and put in -5
You get the equation: y = 3/4 (x) - 5
Hope this helps.
m=any number
x=x
b=any number
b is the y intercept, which is when x is zero what y is.
Did this help? Or do you not understand how to graph from a slope intercept form?
The slope of the line is another way of saying How steep is this line?
To find an exact number for that, we use the concept rise over run.
First, you find two points on the line, (Let's say our points are (3,3) and (4,5))
Next you find out how much the line runs, aka how much it goes sideways within the two points we picked. To do that, you take the point with the greatest x value, and subtract the x value of the other point:
4-3=1
Now let's find the rise aka how much the line goes up within the two points we picked. To do that, we take the y value of our first point, and subtract the y value of our second point:
5-3=2
Now we have our Rise (2) and our Run (1), so let's put Rise over Run:
2/1
simplify
2
And we have the slope of the line!
Also, if we had a negative number of pages to read, that would tell us they are already read.
It's like money. If you have $5 to spend, you can go out and bye one gallon of gas due to inflation :).
But if you had -$5, it means you have already spent the money. Just as if you have five pages to read, you will have something to spend 2.5 minutes on. If you have -5 pages to read, you will need to find another book.
I hope this helps!
FreeRadical
