Linear Functions and Slope

• negative slope

• positive slope

• zero slope

• undefined slope

Find the slope of the line passing through the points (-3,4) and (-4,-2).

• 
  

  m = -2

• m = 2

• m = -6

• m = 6

• negative slope

• positive slope

• zero slope

• undefined slope

Find the slope of the line passing through the points (4,-2) and (-1,5).

• 
  

  $m\ =\frac{5}{7}$
  

• $m\ =\frac{7}{5}$

• $m\ =-\frac{7}{5}$

• $m\ =\ -\frac{5}{7}$

• negative slope

• positive slope

• zero slope

• undefined slope

What is the point-slope form of the equation of a line?

• $y\ =\ mx\ +\ b$

• $y\ -\ y_1\ =m\left(x\ -\ x_1\right)$

•  $Ax\ +\ By\ +\ C\ =\ 0$ 

• $m\ =\ \frac{y_2\ -\ y_1}{x_2\ -\ x_1}$

• negative slope

• positive slope

• zero slope

• undefined slope

What is the slope-intercept form of the equation of a line?

• $m\ =\ \frac{y_2\ -\ y_1}{x_2\ -\ x_1}$

• $y\ -\ y_1\ =\ m\left(x\ -\ x_1\right)$

• $Ax\ +\ By\ +C\ =\ 0$

• 
  

  $y\ =\ mx\ +\ b$
  

Find the slope and the y-intercept of the line whose equation is

6x - 5y - 20 = 0

• 
  

  $m\ =\ -\frac{6}{5},\ b\ =\ 4$
  

• $m\ =\ -\frac{6}{5},\ b\ =\ -4$

• $m\ =\ \frac{6}{5},\ b\ =\ -4$

• $m\ =\ \frac{6}{5},\ b\ =\ 4$

What is the general form of the equation of a line?

• 
  

  $Ax\ +\ By\ +\ C\ =\ 0$
  

• $y\ =\ mx\ +\ b$

• $y\ -\ y_1\ =\ m\left(x\ -\ x_1\right)$

• $m\ =\ \frac{y_2\ -\ y_1}{x_2\ -\ x_1}$