hunterriverpei.com->Linear-equations-> SOLUTION: exactly how to correctly carry out the straight equation after y2-y1/x2-x1. I am struggling with y=mx+b var visible_logon_form_ = false;Log in or register.Username: Password: it is registered in one easy step!.Reset her password if you forgot it."; return false; } "> log On
Click below to check out ALL troubles on Linear-equationsQuestion 1035969: just how to correctly do the direct equation ~ y2-y1/x2-x1. I am struggling through y=mx+b answer by Theo(11766)
(Show Source): You have the right to put this solution on her website! y = mx + b is the slope intercept kind of the equation that a right line.m is the slopeb is the y-intercept.if you are given 2 points, you discover the steep by y = (y2-y1) / (x2-x1)any among the points deserve to be x1,y1.the various other of the clues is climate x2,y2.you deal with for the steep first.once you find the slope, girlfriend take any type of one that the points and also replace x through the x-coordinate of that point and y v the y coordinate of that suggest to resolve for the y-intercept.for example:your points space (1,1) and (2,3)assign (x1,y1) to (1,1)assign (x2,y2) to 2,3)your steep is (y2-y1) / (x2-x1) = (3-1) / (2-1) = 2 / 1 = 2the equation of y = mx + b i do not care y = 2 * x + bnow girlfriend take any kind of one the the points and replace x v the x-coordinate of that allude and y with the y-coordinate the that allude and resolve for b.we"ll use (1,1).y = 2 * x + b becomes 1 = 2 * 1 + bsimplify to acquire 1 = 2 + bsubtract 2 from both political parties of this equation to get:1 - 2 = bsolve because that b to gain b = -1replace b with -1 and also your equation i do not care y = 2 * x - 1here"s a graph of your equation.there is another means to discover the y-intercept once you understand the slope.that is to use the point slope type of the equation.that form is y-y1 = m * (x-x1).the slope is 2 and the allude we are using is (1,1).that way we assigned (1,1) to (x1,y1).all you need is a point on the line.any allude on the line will do.this equation becomes (y-1) = 2 * (x-1).simplify to obtain y-1 = 2x - 2add 1 come both sides of this equation to acquire y = 2x - 1.that"s the slope intercept type of the equation, when again.whether you begin with y = 2x + b and replace y v 1 and x v 1 it s okay you the very same answer as when you usage y-1 = 2 * (x - 1).the second type is dubbed the point slope form.here"s some recommendations that might help.http://www.regentsprep.org/regents/math/hunterriverpei.com/ac1/eqlines.htmhttp://www.purplemath.com/modules/strtlneq.htmhttp://www.purplemath.com/modules/strtlneq2.htmhttp://www.regentsprep.org/regents/math/hunterriverpei.com/ac1/indexAC1.htm