GEO: 3-6 QC (Lines in Coor. Plane)

1. Which equation is written in slope-intercept form below? 2x + 9y = -36 y - 5 = 2(x - 8) y = x ^{2}y = -4x + 3 2. Which equation is written in point-slope form below? 2x + 9y = -36 y - 5 = 2(x - 8) y = x ^{2}y = -4x + 3 3. Which equation below represents a vertical line? y = 6 y - 5 = 2(x - 8) x = -10 y = -4x + 3 4. Which equation below represents a horizontal line? y = 6 y - 5 = 2(x - 8) x = -10 y = -4x + 3 5. What is the equation of the line that has a slope of 6 and contains (3, -4) in point-slope form? y = 6x - 22 y - 4 = 6(x + 3) y + 4 = 6(x - 3) y + 4 = -6(x + 3) 6. What is the equation of the line that has a slope of 6 and contains (3, -4) in slope-intercept form? y = 6x - 22 -6x + y = -22 y + 4 = 6(x - 3) y = 6x - 4 7. What is the equation of the line, in slope- intercept form, that contains the points (-1, 0) and (1, 2)? y = -x - 1 y = x + 1 y = -x + 1 This is a line with an undefined slope. 2 -2 4 -4 6 -6 2 -2 4 -4 6 -6 8 -8 10 -10 8. Drag the equation to the correct line. no line to represent: x = -3 ? y -2 = .5(x - 2) ? y = .5x - 2 ? y = -3 ? A B C 2 -2 4 -4 6 -6 2 -2 4 -4 6 -6 8 -8 10 -10 9. Drag the correct equation to the line it represents. y - 3 = -2(x - 0) ? A x = 2 ? B C equation not graphed: y = 2x - 1 ? y = 2 ? 10. Which type of lines do the equations below represent? parallel lines intersecting lines y = -2x - 5 and y + 4 = -2(x - 8) perpendicular lines coinciding lines 11. Which type of lines do the equations below represent? parallel lines intersecting lines y = -2x - 5 and y = 5x + 2 perpendicular lines coinciding lines 12. Which type of lines do the equations below represent? parallel lines intersecting lines y = -2x - 5 and 2y = -4x - 10 perpendicular lines coinciding lines 13. Which type of lines do the following equations represent? parallel lines intersecting lines y = ⅓x+9 and y=-3x+8 perpendicular lines coinciding lines |

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