We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive pseudonymised information about your use of our website. cookie policy and privacy policy.
 
+0  
 
+1
123
2
avatar

find the value of a such that the points (3,2) , (1,-4) and (a, 6) all lie on the same line. 

 Jan 12, 2019

Best Answer 

 #1
avatar+533 
0

the slope of the two known points is (-4-2)/(1-3) or -6/-2 which is 3, and the slope of (a, 6) and (3, 2) must also be 3 for them to all be on the same line. the slope of those two points is (6-2)/(a-3), which must be 3, so 4/(a-3) is 3, and 4=3a-9, so 3a=13 and a=13/3.

 

HOPE THIS HELPED!

 Jan 12, 2019
 #1
avatar+533 
0
Best Answer

the slope of the two known points is (-4-2)/(1-3) or -6/-2 which is 3, and the slope of (a, 6) and (3, 2) must also be 3 for them to all be on the same line. the slope of those two points is (6-2)/(a-3), which must be 3, so 4/(a-3) is 3, and 4=3a-9, so 3a=13 and a=13/3.

 

HOPE THIS HELPED!

asdf335 Jan 12, 2019
 #2
avatar+103138 
0

Nice, asdf.....!!!!

 

 

cool cool cool

CPhill  Jan 12, 2019

8 Online Users

avatar