SOLUTION: i need help with the following problem: write the equation of the line and graph the equation by using either the slope-intercept equation or by using x- and y- intercepts. the po

Algebra ->  Linear-equations -> SOLUTION: i need help with the following problem: write the equation of the line and graph the equation by using either the slope-intercept equation or by using x- and y- intercepts. the po      Log On


   

Question 211111: i need help with the following problem: write the equation of the line and graph the equation by using either the slope-intercept equation or by using x- and y- intercepts. the points are (4,6) (-1,2).
Please help
Found 2 solutions by rfer, Alan3354:
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
y+mx+b
y=x+3
y int=(0,3)
x int=(-4,0)

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
write the equation of the line and graph the equation by using either the slope-intercept equation or by using x- and y- intercepts. the points are
(4,6) (-1,2).
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Slope, m, = diffy/diffx
m = (2-6)/(-1-4)
m = 4/5
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then use either point as (x1,y1)
y-y1 = m*(x-x1)
y-6 = (4/5)*(x-4)
y = (4/5)x + 14/5
y-intercept = 14/5
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Set y = 0 to find the x-intercept
(4/5)x + 14/5
4x = 14
x = 7/2