Posted by Emma on .
Please help me understand this question, thanks!
10. Write the slopeintercept form of an equation of the line perpendicular to the line in Exercise 7 with a yintercept of 3.
7. (4, 9), (3, 2)

Math 
Reiny,
slope for the the 2 given points
=(2+9)/(34) = 11/7
so the slope of a perpendicular line is +7/11
so for a slope of 7/11 and a yintercept of 3 the equation is
y = (7/11)x  3