TO ANSWER EACH QUESTION . 1. Approximate the y-coordinate of the - - PowerPoint PPT Presentation

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TO ANSWER EACH QUESTION . 1. Approximate the y-coordinate of the - - PowerPoint PPT Presentation

Oct 21, 2022 365 likes •610 views

D AY 76 R EVIEW OF I NVERSE F UNCTIONS W ORK WITH PARTNER . U SE THE GRAPH TO ANSWER EACH QUESTION . 1. Approximate the y-coordinate of the point on the line with the given - coordinate. a. 0 b. 10 c. 2 2. Approximate the x-coordinate of

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SLIDE 1

DAY 76 – REVIEW OF INVERSE FUNCTIONS

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SLIDE 2

WORK WITH PARTNER. USE THE GRAPH

TO ANSWER EACH QUESTION.

  • 1. Approximate the y-coordinate of the point
  • n the line with the given - coordinate.
  • a. 0
  • b. 10
  • c. 2
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SLIDE 3
  • 2. Approximate the x-coordinate of the point
  • n the line with the given – coordinate.
  • a. -7
  • b. -3
  • c. 4
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SLIDE 4
  • 3. What is the relationship between the x-

and y- coordinates of a point on a line and the equation of the line?

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SLIDE 5
  • 3. What is the relationship between the x- and y-

coordinates of a point on a line and the equation

  • f the line?
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SLIDE 6
  • 4. What is an equation of the line in the

graph?

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SLIDE 7
  • 5. Use a graphing utility to

graph the line y = 2x - 0.8.

  • 6. Use DESMOS to make a

table of about 8 ordered pairs that are on the line.

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SLIDE 8

7.Delete the graph of the equation and graph only the equation .

  • 8. Use DESMOS and make a

table of about 8 ordered pairs that are on the line .

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SLIDE 9
  • 9. Examine your tables of ordered
  • pairs. Write the coordinates of a

point that is in both tables. If you cannot find such a point, write the coordinates of a point close to points

  • n both tables.
  • 10. Without graphing, how do you

know that the graphs of and will intersect?

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SLIDE 10
  • 11. Where do you think the lines will

intersect? Check by graphing both lines on the same set of axes. Use DESMOS to find the point of intersection.

  • 12. Clear the graph screen. On the

same set of axes, graph the equations and .Use DESMOS to find the point of intersection.

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SLIDE 11
  • 13. Clear the graph screen. On the

same set of axes, graph the equations and . What happens when you try to find the point of intersection? Explain.

  • 14. Write a pair of equations and have

your partner find the point of intersection of the graphs of the

  • equations. How can you be sure the

pair of equations you write will intersect?

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SLIDE 12

CHANGE EACH EQUATION TO SLOPE-

INTERCEPT FORM,

  • 15. Graph the two equations to find a common

solution.

3x+ y = 11 x - 2y = 6

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SLIDE 13

SOLVE THE SYSTEM BY GRAPHING

3x – y = 2 x – 2y = - 2

16.

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SLIDE 14

DETERMINE WHETHER (-2,2) IS A

SOLUTION OF THE SYSTEM.

y = -3x – 4 y = -2x – 2

17.

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SLIDE 15

ANSWER KEYS

  • 1. 0
  • 2. 4
  • 3. Positive, linear
  • 4. y = x + 4

5.

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SLIDE 16

6. 7.

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SLIDE 17

8.

  • 9. (2 , 3.2)
  • 10. the lines have a

negative and a positive slope

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SLIDE 18

11.

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SLIDE 19

12.

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SLIDE 20
  • 13. Answers may vary
  • 14. Answers may vary
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SLIDE 21
  • 15. Graph the two equations to find a common solution.

(4, -1) is the common solution.

3x+ y = 11 x - 2y = 6

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SLIDE 22
  • 16. Solve the System by Graphing
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SLIDE 23
  • 17. (-2 , 2) is a solution of the

system