Lesson 1.6: Writing and Graphing Equations in Two Variables Answers
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Which description is represented by a discrete graph?
A
Kiley bought a platter for $19 and several matching bowls that were $8 each. What is the total cost before tax?B
The temperature at 9 a.m. was 83° F and is heating up at an average rate of 6°F per hour. What is the temperature x hours later?C
Juan ate an egg with 78 calories and some cereal with 110 calories per serving for breakfast. What is the total amount of calories he consumed?D
A bottle contained 2,000 mL of liquid and is being poured out at an average rate of 300 mL per second. How much liquid is left in the bottle after x seconds?22
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On a coordinate plane, a straight line with a positive slope begins at point (0, 50) and ends at point (5.5, 600).
A
the total amount of money in the cash register, y, containing $50 in change and small bills and x $100 billsB
the total number of puzzle pieces, y, in a brand new 50-piece puzzle, and x brand-new 100-piece puzzlesC
the total weight of the barbell, y, where the bar weighs 50 pounds and x 100-pound weights are added to itD
the total number of calories, y, in a salad with vegetables containing 50 calories topped with x ounces of salad dressing at 100 calories per ounce23
Jayne stopped to get gas before going on a road trip. The tank already had 4 gallons of gas in it. Which equation relates the total amount of gasoline in the tank, y, to the number of gallons that she put in the tank, x?
A
y=4+xB
y = x − 4C
y = 4 · xD
y = x ÷ 424
Otto used 5.5 cups of whole wheat flour and x cups of white flour in the recipe. What is the equation that can be used to find the value of y, the total amount of flour that Otto used in the recipe, and what are the constraints on the values of x and y?
A
y=5.5x; x is any integer greater than or equal to 0, and y is an integer greater than or equal to 5.B
y=5.5x; x is any real number greater than or equal to 0, and y is any real number greater than or equal to 5.5.C
y=x+5.5; x is any integer greater than or equal to 0, and y is an integer greater than or equal to 5.D
y=x+5.5; x is any real number greater than or equal to 0, and y is any real number greater than or equal to 5.5.Did you find these answers helpful?
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