Writing Equations of Lines

Which of the following is the slope equation?

•  $m=\frac{y_2-y_1}{x_2-x_1}$  

•  $m=\frac{y_1-y_2}{x_1-x_2}$  

•  $m=\frac{x_2-x_1}{y_2-y_1}$  

•  $m=\frac{x_1-x_2}{y_1-y_2}$  

Which equation is written in point-slope form?

•  $y=mx+b$  
  

•  $y-y_1=m\left(x-x_1\right)$  
  

•  $Ax+By=C$  
  

Which equation is written in slope-intercept form?

•  $y=mx+b$  
  

•  $y-y_1=m\left(x-x_1\right)$  
  

•  $Ax+By=C$  
  

Which equation is written in standard form?

•  $y=mx+b$  
  

•  $y-y_1=m\left(x-x_1\right)$  
  

•  $Ax+By=C$  
  

Which of the following lines is parallel to  $y=-\frac{2}{5}x+4$  ?

•  $y=\frac{2}{5}x-2$  
  

•  $y=\frac{5}{2}x+5$  
  

•  $y=-\frac{2}{5}x-6$  
  

•  $y=-\frac{5}{2}x-7$  

Which of the following lines is parallel to  $y=4x-1$  ?

•  $y=4x-2$  
  

•  $y=-\frac{1}{4}x+5$  
  

•  $y=-4x-6$  
  

•  $y=\frac{1}{4}x-7$  

Which of the following lines is parallel to  $y=-7x+3$  ?

•  $y=\frac{1}{7}x-5$  
  

•  $y=-\frac{1}{7}x+1$  
  

•  $y=7x+9$  
  

•  $y=-7x-2$  

Which of the following lines is parallel to  $y=\frac{3}{4}x-8$  ?

•  $y=\frac{4}{3}x-5$  
  

•  $y=\frac{3}{4}x+1$  
  

•  $y=-\frac{3}{4}x+9$  
  

•  $y=-\frac{4}{3}x-2$  

Which of the following lines is perpendicular to  $y=\frac{1}{2}x-1$  ?

•  $y=2x-5$  
  

•  $y=-2x+1$  
  

•  $y=-\frac{1}{2}x+7$  
  

•  $y=\frac{1}{2}x-2$  

Which of the following lines is perpendicular to  $y=-4x+2$  ?

•  $y=\frac{1}{4}x+10$  
  

•  $y=-4x+1$  
  

•  $y=4x+6$  
  

•  $y=-\frac{1}{4}x-6$