SOLUTION: finite mathematics: A) Find the equation of the line passing through the points (1,2) and (-7,14). Write your answer in slope-intercept form. B) Write an equation of a line t

Question 1158923: finite mathematics:
A) Find the equation of the line passing through the points (1,2) and (-7,14). Write your answer in slope-intercept form.
B) Write an equation of a line that is parallel to the line you found in part (A). Write your answer in slope-intercept form.
C) Write an equation of a line that is perpendicular to the line you found in part (A). Write your answer in slope-intercept form.
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
the slope is change in y/change in x or 12/-8 or -3/2
point slope formula y-y1=m(x-x1), m slope (x1, y1) a point
y-2=(-3/2)(x-1)
y=-(3/2)x+7/2
a line parallel to that has the same slope, so y=-(3/2)x would work.
perpendicular requires a negative reciprocal slope, and that would be 2/3, flipping over the fraction and changing the sign
y-2=(2/3)(x-1)
y=(2/3)x+4/3

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