1. Tell whether the ordered pair is a solution of the equation. -5y – 6x = 0; (-6, 5)
2. Given the equations: x – y = 3 and 2x – 2y = 6, explain why the equations look different but have the
same graph. (Hint: put the equations in “y =” form)
3. Multiple Choice: Which ordered pair is a solution of 6x + 3y = 18?
a) (-2, -10)
b) (-2, 10)
c) (2, 10)
Graph the Equation. Make a table of at least 3 values (Yours do NOT have to be the same as the key)
(without a calc)
4.
y+x=2
5. y – 2x = 5
Use your graphing calculator to quickly find a table of values (show 5 points), then graph.
6.
y – 3x = 0
7. -y + 4x = 1
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8. The weight y (in pounds) of a loaf of bread that a recipe yields is given by the function y = .5x + 1
Where x is the number of cups of flour used.
a. What is the domain (possible values of x)?:
b. What is the range (possible values of y)?
c. If you have 4 cups of flour, what is the weight of the largest loaf of bread you can make?
9. After visiting relative who lives 200 miles away, your family drives home at an average speed of 50
miles per hour. Your distance from home, d, is given by: d = 200 – 50t, where t is the time spent driving.
a. What is the domain (possible inputs)?
b. What is the range (possible outputs)?
c. What is your distance from home after driving for 1.5 hours?
Find the average rate of change for each scenario given below:
10 .
11.