Question

Please help.... what is the difference between slope-intercept form and slope- intercept formula?

Answer 1

slope intercept is when you know the y intercept
slope intercept is y = mx+b
where m is the slope and b the y intercept

point slope form is when you have 2 given points
formula: y = y(1) + m+ ( x - x(1) )

they are basically the same think its just that one is easier to use than the other .... it depends on the problem

Answer 2

become a fan ? :D

Answer 3

so if the question says Take the points you have selected and write the equation of the line using the slope-intercept formula. Show the work. and my points are(2, 4) and (1,-2). oh and I became a fan

Answer 4

how would I do this

Answer 5

thank you , and one second ill show you

Answer 6

The equation is Y = Mx + B. In this equation, m is the slope value and B is the y intercept. X and Y are coordinates of the line which can be substituted into the equation to solve for other variables. Example of equation: Y = 3x + 7.

Answer 7

oh and my slope is 6

Answer 8

yes m=slope

Answer 9

so would it be y = 6x - 4 ? and which point am I supposed to use

Answer 10

Point Slope form: (y - y1) = m(x - x1)
m = 6
For the point (x1, y1) you can use either of the two points: (2,4) or (1,-2).
After you simplify and express the answer in the Slope-Intercept form, y = mx + b, you will see you get identical results no matter which point you use.

Answer 11

Do you want me to complete this problem?

Answer 12

yes please

Answer 13

Okay. I will start from the beginning.

You are given two points on the line: (2,4) and (1,-2)
Given two points you can quickly find the slope.
Slope m = (y1-y2)(x1-x2) = (4-(-2)) / (2-1) = 6

They want the answer in the slope-intercept formula. That is, y = mx + b
Put the value for m.
y = 6x + b
We need to solve for b.
You can put either one of the points into the equation.
Let us take the first point (2,4). Put x = 2 and y = 4 into the equation and solve for b:
y = 6x + b
4 = (6)(2) + b
4 = 12 + b
b = 4 - 12 = -8

y = 6x - 8 is the equation of the line in slope-intercept form.

Answer 14

We could also have chosen the second point and we will still end up with the same answer.
Let us start with y = 6x + b and try the second point (1,-2)
put x = 1 and y = -2 in y = 6x + b
-2 = 6(1) + b
-2 = 6 + b
-2 - 6 = b
b = -8
The equation is y = 6x - 8 (same as before).

Answer 15

The -8 is called the y-intercept. It is where the line crosses the y-axis.
The graph of the line will look like this: