Question

HELP HELP HELP Quick algebra 1 questions

Answer 1

Hello:

Okay, this problem should be taken in a series of steps:

What is the slope's formula?

  $\rm\hookrightarrow \frac{y_2-y_1}{x_2-x_1}$

• (x₁,y₁) -- first point
• (x₂,y₂) -- second point

Okay, now let's use this knowledge  

10. (5,-19) and (-5,21)

       $Slope = \frac{21--19}{-5-5} =\frac{40}{-10}=-4$

11. (12,1) and (12, -1)

      $Slope = \frac{-1-1}{12-12} =\frac{-2}{0}$

12. (8,7) and (4,7)

     $Slope = \frac{7-7}{4-7} =0$

Answer:

• Question 10: -4
• Question 11: undefined
• Question 12: 0

Hopefully that helps!