how do you find the y intercept if you have the slope and a point?
232412
Using the "slope-intercept" form of the line's equation (y = mx + b), you solve for b (which is the y-intercept you're looking for). Substitute the known slope for m, and substitute the known point's coordinates for x and y, respectively, in the slope-intercept equation. That will let you find b.
306772
Isolate y on the Left Side The form of the equation is Ax + By = C, so subtract Ax from both sides and divide both sides by B. You get : y = -(A/B)x +C/B. This is the slope intercept form. The slope of the line is -(A/B).
120463
Find the Equation of a Line Given That You Know Two Points it Passes Through. The equation of a line is typically written as y=mx+b where m is the slope and b is the y-intercept.
300120
To determine the x-intercept, we set y equal to zero and solve for x. Similarly, to determine the y-intercept, we set x equal to zero and solve for y. For example, lets find the intercepts of the equation y = 3 x − 1 \displaystyle y=3x - 1 y=3x−1. To find the x-intercept, set y = 0 \displaystyle y=0 y=0.
51478
To write an equation in slope-intercept form, given a graph of that equation, pick two points on the line and use them to find the slope. This is the value of m in the equation. Next, find the coordinates of the y-intercept--this should be of the form (0, b). The y- coordinate is the value of b in the equation.
211278
The y-intercept can always be written as (0,y). If the y-intercept is 0, then that means the line passes through the point (0,0) which is also the origin.
208017
Using the Slope Equation Pick two points on the line and determine their coordinates. Determine the difference in y-coordinates of these two points (rise). Determine the difference in x-coordinates for these two points (run). Divide the difference in y-coordinates by the difference in x-coordinates (rise/run or slope).
1139603
To find the x-intercept, set y = 0 and solve for x. To find the y-intercept, set x = 0 and solve for y. This method of finding x- and y-intercepts will be used throughout our study of algebra because it works for any equation. To graph a line, find the intercepts, if they exist, and draw a straight line through them.
1107799
['Since a point on the y axis has x coordinate equal to zero, to find the y interecpt, we set x to zero and find the y coordinate which is f(0). ... ', 'A point on the x axis has y coordinate equal to 0, to find the x intercept, we set y = f(x) = 0 and solve for x. ... ', 'Solve for x.']
1127163
You write an equation with a given slope and point in two possible ways: 1) start with the point slope form y-y1=m(x-x1) and solve for y. y-8=2(x-6) so y-8=2x-12, add 8 to end up with y=2x-4.
275123
Whenever the equation of a line is written in the form y = mx + b, it is called the slope-intercept form of the equation. The m is the slope of the line. And b is the b in the point that is the y-intercept (0, b). For example, for the equation y = 3x – 7, the slope is 3, and the y-intercept is (0, −7).
793860
The slope-intercept form is y=mx+b y = m x + b , where m is the slope and b is the y-intercept. Rewrite in slope-intercept form. Subtract 3x 3 x from both sides of the equation. Divide each term by 4 4 and simplify.
66994
The slope-intercept formula for a line is y = mx + b, where m is the slope of the line and b is the y-intercept. point on the line, denoted by (x1, y1), and the slope of the line, denoted by m, to calculate the slope-intercept formula for the line.
16726
['Step One: Identify two points on the line.', 'Step Two: Select one to be (x1, y1) and the other to be (x2, y2).', 'Step Three: Use the slope equation to calculate slope.']
814733
['Find the slope, m.', 'Find the y-intercept, b.', 'Plot the y-intercept.', 'Use the slope to plot additional points.', 'Draw the line.']
152008
To find the x intercept using the equation of the line, plug in 0 for the y variable and solve for x. You can also use the graph of the line to find the x intercept. Just look on the graph for the point where the line crosses the x-axis, which is the horizontal axis. That point is the x intercept.
321287
['y = mx + b.', 'Graph the equation: y = 2x + 4.', 'Slope = 2 or 2/1.', 'Y-intercept = 4 or (0,4)', 'Step 1: Plot the y-intercept on your graph. ... ', 'Step 2: From the y-intercept (0,4) use the slope to plot your next point.', 'The slope is 2, so you will rise 2 (up) and run 1 (to the right).']