# SOLUTION: y=mx+b I am having a having a problem figuring out the run of the slope with a graph. If I have figured out the graph equation out Im not sure exactly how to move Y intercept. I kn

Algebra ->  -> SOLUTION: y=mx+b I am having a having a problem figuring out the run of the slope with a graph. If I have figured out the graph equation out Im not sure exactly how to move Y intercept. I kn      Log On

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 Question 507721: y=mx+b I am having a having a problem figuring out the run of the slope with a graph. If I have figured out the graph equation out Im not sure exactly how to move Y intercept. I know you know you move Y over Mx but get confused with fractions and or the next step. Thank You for your help Angela Smutek... Example: Y=mx+b= 4=3/5x+bAnswer by oberobic(2304)   (Show Source): You can put this solution on YOUR website!The slope-intercept form is: y = mx + b. m = slope m = rise over the run m = change in y / change in x m = 0 if the line is horizontal m = undefined if the line is vertical b = y-intercept y-intercept is the point (0, b) . In your given equation: y = 4 y = (3/5)*x + b so 4 = (3/5)*x + b m = 3/5 This means that y changes 3 units when x changes 5 units. rise = 3 / run = 5 . 4 = 3/5x + b does not not tell us enough to find the value for 'b'. For example, if x = 5, then b =1. But if x = -5, then b = 9. We cannot find 'b' unless we know a (x,y) pair. . In the following graph, two lines are shown; red line is for the line defined by y = 3/5x +1 green line is defined by y = 3/5x + 9 blue line is defined by y = -5/3x -3 which is perpendicular to the other two .