+0  
 
0
823
1
avatar

Write the point-slope form of the linear equation that has the following solutions.

 

  • x = -1.5      y = 2.5
  • x = 1.5       y=-3.5

 

Then rewrite the equation in slope-intercept form.

 

 

 

Can somone help me though this?

 Mar 28, 2016
 #1
avatar+130561 
0

We have the points   (-1.5 , 2.5)  and ( 1.5, - 3.5)

 

Let's find the slope

 

First, subtract the y's in some order    -3.5  - 2.5 =  -6

 

Now......subtract the x's in the same order  =  1.5  - (-1.5)  = 3

 

Put the first result over the second   =  -6/3  =  2 .......this is the slope

 

Using either of the points - I'll use the first one -  and the slope we have

 

y - 2.5  = (-2)[x - (-1.5)]     this is the point-slope form  .....now, simplify this....

 

y - 2.5 = (-2) [ x + 1.5]

 

y - 2.5 = (-2)x  - 3    add 2.5 to both sides

 

y   = -2x - 0.5

 

y =  -2x - 1/2     and this is slope-intercept form

 

 

cool cool cool

 Mar 28, 2016

0 Online Users