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Equation of a Line

Equation of a Line. Equation of a line. Objective: To write the equation of line y = mx + b, (x, y) point on line m = coefficient of x and the ratio = b = y coordinate of y- intercept. Equation of a line. y = x - 4, graph m = b = How do you calculate m = Look at coordinate

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Equation of a Line

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  1. Equation of a Line

  2. Equation of a line • Objective: To write the equation of line • y = mx + b, • (x, y) point on line • m = coefficient of x and the ratio = • b = y coordinate of y- intercept

  3. Equation of a line • y = x - 4, graph • m = • b = How do you calculate m = Look at coordinate Of two points. m = y2 – y1 x2– x1

  4. Equation of Line • Given two points ( -3, 4) and ( 6, 2) Find m:m = y2 – y1 x2 – x1 • If b = 3, what is equation of this line? Y = mx + b

  5. Equation of a line Given graph Write the Equation of the line:

  6. Equation of a line Given graph Write the Equation of the line:  Note: m =

  7. Equation of a line Given graph Write the Equation of the line:  Note: m =

  8. Equation of a line Graph 2x – 5y = 10 

  9. Equation of a line How do you know two lines are parallel? 

  10. Equation of a line How do you know two lines are perpendicular? 

  11. Equation of a line Write the equation of the line that has y-int of 7 and is parallel to the graph of y = 5x -3. 

  12. Equation of a line Write the equation of the line that has y-int of 2 and is perpendicular to the graph of y = 5x -3. 

  13. Equation of a line Write the equation of the line has slope of 3 and goes through (4, 1) Use y= mx + b. 

  14. Equation of a line Write the equation of the line has goes through (0, 7)& (1, 9). 

  15. Equation of a line Write the equation of the line has goes through (-1, 3) and is parallel to 3x – y = 4. 

  16. Equation of a line (x, y) b m 2 points parallel or perpendicular line y= mx + b Make up a problem: Choose 2 info to give: Write the equation of the line. 

  17. Equation of a line (x, y) b m 2 points parallel or perpendicular line y= mx + b Make up a problem: Choose 2 info to give: Write the equation of the line. Do: Do:  Compare solution with student beside you.

  18. Equation of a line Homework: P. 368 3 – 36 every third.

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