For the systems of linear equations in questions 1-3
-Determine how many solutions exist
-Use either elimination or substitution to find the solutions (if any)
-Labeling the x-intercepts, y-intercepts, and points of intersection
1. y = 2x + 3 and y = -x - 4
2. 2x + 3y = 8 and 3x + 2y = 7
3. x + y = 3 and y = x + 3
4. A university bookstore recently sold a wirebound graph-paper notebook for $2.50, and a college-ruled notebook for $2.30. At the start of spring semester, a combination of 50 of these notebooks were sold for a total of $118.60. How many of each type were sold?
5. A shopper buys three oranges and five lemons for $10.26, while a second shopper buys four lemons and six oranges for $11.16. What is the price of each fruit?
6. In a triangle, the sum of the interior angles is 180 degrees. If angle A is three times as large as angle B, and angles B and C sum to 90 degrees, what is the measure of each angle?
2006-10-12
20:41:18
·
5 answers
·
asked by
pmgstudios
1
in
Mathematics