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profileYeni Guillermo Delgado
Home>Homework Answsers>Mathematics homework help
  1. Evaluate: 3x - 4y + 11 for x = -2 and y = -1.   (Please see sections 1.7 for further review.)
  2. Graph or explain how to graph: x  = 5  (Please see sections 2.2  for further review.)
  3. Graph or explain how to graph the equation:  y = 3x – 5  (Please see sections 2.2 & 2.3 for further review.)
  4. Find the y-intercept to the equation: y = 5x -2
  5. Which relations below are also functions?  (Please see section 2.7 for further review.) 
             a. {(1,1), (2,2), (3,3)}
             b. {(1,1), (2,1), (3,1)}
             c. {(1,1), (1,2), (1,3)}
             d. {(1,1), (2,3), (1,3)}
             e. {(1,2), (2,3), (3,2)}
  6. What is an x-intercept? How do you find the x-intercept? What is a y-intercept? How do you find the y-intercept? 
              (Please see section 2.2 for further review.)

  7. What is the slope formula?  Find the slope of the line passing through the points:  (-3, 8) and (5, -2)  (Please see section 2.3 for further review.)

  8. Find the slope and the y-intercept of the line:  y = 3x - 1  (Please see section 2.4 for further review.)

  9. Write the equation of the line (in slope-intercept form) where:  slope = 1/4 and y-intercept = (0, -5) 
             (Please see section 2.4 for further review.)
  10. Graph or explain how to graph: 4x + y >= 4 
           (">=" means “greater than and equal to” - please see section 2.5 for further review.)
  11. If f(x) = 3x² - x, find f(-5).  (Please see sections 2.7 for further review.)

 

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