Loading [MathJax]/jax/output/SVG/jax.js
 
+0  
 
0
71
1
avatar+1926 

A line passes through the points A, B, and C. If A=(2,4), B=(3,12), and C=(4,y), then find y.

 Oct 11, 2023
 #1
avatar+130466 
+1

All the points are on the same  line...So, the slope between any  two points will be the same

 

So

 

[ 12 - -4] / [ -3 - -2 ]  =  16 / -1  = -16

 

And

 

[ y - 12 ] / [ 4 - -3] =  -16

 

[y -12 ] / [ 7]  = -16

 

y -12  = -16 * 7

 

y - 12  = -112

 

y =  -112 + 12  =   -100

 

 

cool cool cool

 Oct 11, 2023

1 Online Users