SOLUTION: write an equation in slope-intercept form of a line containing the point (4,7) and (8,9).

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Question 195794: write an equation in slope-intercept form of a line containing the point (4,7) and (8,9).
Answer by jojo14344(1513) About Me  (Show Source):
You can put this solution on YOUR website!


Write an equation in slope-intercept form of a line containing the point (4,7) and (8,9).

We get the Slope via Point Slope form:
m=%28y%5B2%5D-y%5B1%5D%29%2F%28x%5B2%5D-x%5B1%5D%29=%289-7%29%2F%288-4%29=2%2F4
red%28m=1%2F2%29

Thru point (4,7) in Slope-Intercept Form:
y=mx%2Bb
7=%281%2Fcross%282%291%29%28cross%284%292%29%2Bb
7=2%2Bb
b=7-2=red%285%29, Y-Inetercept

The same as thru point (8,9):
9=%281%2Fcross%282%291%29%28cross%288%294%29%2Bb
b=9-4=red%285%29


It follows, ---> y = (1/2)x + 5, Answer


Thank you,
Jojo