SOLUTION: Write the slope-intercept equation for the line that passes through (5,4) and (7,8). Please show all of work.

Algebra ->  Linear-equations -> SOLUTION: Write the slope-intercept equation for the line that passes through (5,4) and (7,8). Please show all of work.      Log On


   

Question 409730: Write the slope-intercept equation for the line that passes through (5,4) and (7,8). Please show all of work.
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi

Write the slope-intercept equation for the line that passes through (5,4) and (7,8)

Using the point-slope formula, m+=%28y%5B2%5D+-+y%5B1%5D%29%2F%28x%5B2%5D+-+x%5B1%5D%29

(5,4) and 

(7,8)  m = -4/-2 = 2

 



y = 2x + b   |using ordered pair Pt(5,4) to solve for b

4 = 10 + b

-6 = b

y = 2x -6