Concept 3- How to use y=mx+b [Manar Ali]
Concept 2- How to Find Slope of a Line-Alia amer
rise/run
slope formila
steps to find the rise and run :
find two points on the line
make a triangle to determine the slope
count up (rise) count right (run)
put the numbers in rise/run form and simplify
how to find the slope using points on a graph:
label the points with x1 y1, x2 y2
do y2-y1/x2-x1
simplify the equation
The information will be shown like this example: m=5 and y-intercept = 10.
In a problem, you could be given the slope and y-intercept of a line.
Write the equation of a line given a graph
Using the graph, find the slope by using the rise/run technique.
Find the y-intercept.The y-intercept is where the line crosses the y-axis. The y-intercept is the (b) in the equation y=mx+b.
After that, you will be able to use the (m) and (b) to write the equation you will need to use to solve the question. The equation is y = mx + b.
Given the slope and the y-intercept
Concept 4- How to write the equation of a line-Hana elsadr
Using the example above, you can use the equation y = mx + b. Adding the slope and the y-intercept would like this: y = 5x + 10.
If the y-intercept was -10, then the equation would be y = 5x - 10.
Video explanation
Video explanation
:
concept 1- How to Graph a Line-Salma Hemmat
There are two ways to graph a line where you. can either use a table of values or using two points.
To graph a line using a table of values, first look at the values in the x and y columns, those are your ordered pairs.
To graph a line using two points plot the points given on the graph
After you gather each ordered pair, plot them on the graph.
Lastly connect the points and you should have a line.
Depending on the points you've plotted, your graph should look something like this.
Connect the points on the graph.
Video Links
How to use y=mx+b
1- Before locating this formula, know that mx is equal to the slope, and b is the y intercept of the line
3- The slope is used to determine if the point is negative or positive. It also creates the rise/run
2- The y intercept is where the line cuts in between the y axis
answer- 1
Example 3- What is the y-intercept of y=1+6x?
click to edit
Example 2- What is the slope of y=6x+2?
answer- 6x
click to edit
answer- 0
Example 1- What is the y-intercept of y=-3x
examples (how to understand an equation using the formula)
Video explanations