Hi

Using the point-slope formula, 

 



1) What is the equation of the line whose y-intercept is 3 and slope is 1

y = x + 3  

2) What is the slope of a line parallel to the line whose equation is y - x = 5

 y-x=5  Or y = x+5  |slope of these parallel lines is m = 1

3)What is the equation of a line that passes through points (-1, 2) and (5, 2)?

(-1, 2) and 

 (5, 2)  m = 0   y = 2 OR y-2 = 0

4)What is the equation of a line with a slope of -2 and a y-intercept of 8?

   y = -2x + 8    OR 2x+ y -8 = 0

5)What is the equation of the line that passes through the point (1, 1) 

  and has a y-intercept of 2, thus Pt(0,2)

 (1,1)

 (0,2)  m = -1   

 y = -x + b    |using ordered pair Pt(0,2) to solve for b

 2 = b

 y = -x + 2

  

 

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