0
How do you use the y intercept and slope of a line to graph it?
Wiki User
∙ 10y ago
Here is an example. y = 2x + 3; that is, the slope is 2, and the y-intercept is 3.
Start with the y-intercept. Plot the point (0, 2).
Now, for the slope: a slope of 2 means that every time you go 1 to the right, you have to go 2 up. Thus, the next point to the right (if you use plotting paper, and one square for each number) would be 1, 4. That is, if you add 1 to the x-coordinate, you have to add 2 to the y-coordinate. After that, once again adding 1 and 2, you get 2, 6. Plot these points, and draw a line through them.
Similarly, if you go to the left, for every unit you go to the left you have to go 2 units down.
2, in this case, is the slope; for other slopes, you just have to change the numbers.
Wiki User
∙ 10y ago
Add your answer:
Earn +20 pts
Describe a situation in which point-slope form would be more useful than slope-intercept form?
You use point-slope form to find the equation of a line if you only have a point and a slope or if you are just given two point. Usually you will convert point-slope form to slope-intercept form to make it easier to use.
How do you graph 5x - 6y equals -30?
Two ways. You can solve for y and then use slope intercept or use x and y intercepts. If x=0 then y=5 (0,5) If y=0 then x=-6 (-6,0) Graph those two points and then draw a line through them.
Which is the equation of the line that has an x intercept of -5?
There is not a single line, but infinitely many lines, that pass through the point (-5, 0). One thing you can do is choose some random slope, then use the equation for an equation that goes through a point and has a specified slope.
If the equation of a line has an undefined slope and passes through the point 1 3 which form would be used to write the equation of the line?
x = 1 (the line intersects the x-axis at 1, and is parallel to the y-axis)We cannot write the equation on the Slope-intercept form, since the slope of the line is undefined. 1 is the x-coordinate of any point on the given line.
What is the equation of a line that passes through the points 2 5 and 4 3?
Points: (2, 5) and (4, 3) Slope: -1 Equation: y = -x+7 in slope-intercept form --- If you want to write the slope-intercept form of the equation of the line passing through the given points, then use the two points to find the slope of the line. After that, use the slope and one of the points to find the y-intercept. For instance, m = (5 - 3)/(2 - 4) = 2/-2 = -1(the slope) y = mx + b (replace m with -1, and (x, y) with (4, 3)) 3 = -1(4) + b 3 = -4 + b (add 4 to both sides) 7 = b Thus, y = -x + 7 is the equation of the line passing through (2, 5) and (4, 3).
Can you use a graph to write the equation of the line in slope-intercept form?
Yes
How do you use the slope and y- intercept in the equation ymx b to graph the line?
If you mean: y = mx+b then it is the formula for a straight line equation whereas m is the slope and b is the y intercept
How do you graph when the equation is not slope intercept form?
To graph an equation that is not in slope-intercept form, you can use the process of finding points on the graph and plotting them. Choose a few x-values, plug them into the equation to find the corresponding y-values, and plot those points on the graph. Then, connect the points with a smooth line to complete the graph.
When should you use the slope-intercept form?
When you are trying to graph an equation.
How do you do a linear graph?
A linear line is just a straight line. To graph it, you can use this equation: y=mx+b where m = the slope of the line, and b = the y-intercept of the line, in other words, where the line crosses the y-axis.
How do he graph linear equations?
Two ways: Way 1: Find two points on the line, graph, and extend line. Way 2: Put the equation in slope-intercept form, plot the constant, use the slope to find the next point(s). Extend the line.
Will a architect use the slope intercept line equation?
Probably.
How do you graph a line on a graph?
well you use a formula ..... the one that i use most is y=mx+b this formula is slope-intercept formula the slope of the line is m, and the intercept is the b(the y intercept). Say the slope(m) is 3/2 the starting from the y intercept (in this case let it be 2, which is the coordinate [0,2]) you would go to the right 2 units and up 3 units(3/2=rise/run) to get another point. With that point(which in this case would be [2,5]) you can make a straight line through the two points to get your line on the graph. you can make as many points as you want, just keep using the slope(in this case 3/2). Another way, with graph paper: if you are dealing with a straight line, then pick two values of x, and solve for the respective y values. Plot these two points on the graph paper, then using a straight edge, connect the dots, and extend beyond each point.
When is it good to use a slope formula?
When formatting the equation of a given line into slope-intercept form.
Write an equation of the line that has a slope of -7 and y intercept 6 in slope intercept form?
Use the slope-intercept form of the line: y = mx + b Here, "m" is the slope, and "b" is the y-intercept, so just replace these variables with the corresponding slope and intercept - and you got your equation. And PLEASE don't ask lots of almost-identical questions, with different slopes and y-intercept. It is really easy to replace the slope and the intercept in this equation.
How can you use slope intercept form to write an equation of a line givven its slope and y intercept?
y intercept is b and slope is m Equation is y = mx + b For example if y intercept (where x = 0) is -3 and slope is 4 then y = 4x-3
When creating a line using the slope-intercept form always plot atleast three?
In the case that you are using Slope-Intercept Form, no, you only plot two points: the y-intercept and one other point. If you don't use Slope-Intercept Form, then you have to use three points.
