## vera_ewing one year ago Math problem

1. hartnn

how did you get that ?

2. hartnn

and its not correct

3. hartnn

algebraic way is to first find the slope of line

4. hartnn

The slope of the line through points (x1,y1) and (x2,y2) is given by : $$\huge m=\frac{y_1-y_2}{x_1-x_2}$$ now,just put the values and find m.

5. imqwerty

or jst do this-$\frac{ y-y _{1} }{ y _{2}-y_{1} }=\frac{ x-x_{1} }{ x_{2}-x_{1}}$

6. hartnn

yes :)

7. hartnn

use point slope form the point slope form of equation of line is $$\large y-y_1=m(x-x_1)$$ where m=slope =-8/3 here. point =(x1,y1)= (9,-4) --->x1= 9 ,y1=-4 just plug in values!

8. hartnn

how you got 24 ?

9. hartnn

3 (y+4) = -8 (x-9)

10. hartnn

now solve

11. hartnn

3y + 12 = -8x +72 8x + 3y = 60 see if you get this :)