742 Chapter 10 Graphing Linear Equations in Two Variables For Exercises 29-36, find the x- and y-intercepts if they exist. 46. : (-2, 1) and (-1,9) h: (0,-6) and (2, 10) 29. -4x +8y = 12 30. 2x y 6 47. : (0,) and (2, 0) 31. y 8x 32. 5x - y 0 ais h: (0,) and (-2, 0) 33. бу — -24 34. 2y 3 1 48. : (1, 1) and (1,-8) 35. 2x+5 = 0 h: (4, -5) and (7,-5) 36. -3x 1 = 0 Section 10.3 Section 10.4 For Exercises 49-54, write each equation in slop intercept form. Identify the slope and the y-interce 49. 5x 2y 10 37. What is the slope of the ladder leaning up against 50. 3x + 4y 12 the wall? 12 ft 38. Point A is located 4 units 52. 5y- 8=4 51. x -3y 0 down and 2 units to the right of point B.What is the slope of the line through points A and B? 53. 2y -5 54. у - х 3D0 5 ft For Exercises 55-59, determine whether the equa represent parallel lines, perpendicular lines, or ne 39. Determine the slope of the line that passes through the points (7,-9) and (-5, -1).
Unitary Method
The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products.
Speed, Time, and Distance
Imagine you and 3 of your friends are planning to go to the playground at 6 in the evening. Your house is one mile away from the playground and one of your friends named Jim must start at 5 pm to reach the playground by walk. The other two friends are 3 miles away.
Profit and Loss
The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.
Units and Measurements
Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experiments to set up the devices.
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