On the grid side of your whiteboard, provide an example of an "inconsistent" system of equations AND determine its number of solutions.
Lines should be parallel. It is no solution.
Use substitution to solve the system of equations.
2x - y = 8
y = 2x - 3
No Solution
Use elimination to solve the system of equations.
4x + 6y = 32
3x - 6y = 3
Solution (5, 2)
Name a solution in the following system of equations graph:
Example: (2, 0)
Find the slope of the line that passes through the pair of points: (5, 3)(-2, 6)
-3/7
Use the graph to determine whether the system is consistent or inconsistent and if it is independent or dependent: y = -3x + 1 AND y = x - 3
consistent and independent
Use substitution to solve the system of equations.
y = 2x + 1
3x + y = -9
Solution (-2, -3)
The sum of two numbers is 24. Five times the first number minus the second number is 12. What are the two numbers?
6 & 18
Name a point that is not a solution in the following system of equations graph:
Example: (-4, 0)
Suppose y varies directly as x, and y = -24 when x = 8. Write a direct variation equation that relates x and y.
y = -3x
Graph the system and determine the number of solutions that it has. If it has one solution, name it.
y = -3
y = x - 3
One solution (0, -3)
Use substitution to solve the system of equations.
y = 3x - 34
y = 2x - 5
Solution (29, 53)
Use elimination to solve the system of equations.
5x + 6y = -8
2x + 3y = -5
Solution (2, -3)
Provide the slope and y-intercept for y < 1 and y > 3
y < 1 - slope: 0, y-int: 1
y > 3 - slope: 0, y-int: 3
f(x) = -x + 4
Graph the system and determine the number of solutions that it has. If it has one solution, name it.
x + 2y = 3
x = 5
One solution (5, -1)
The sum of the measures of angles X and Y is 180°. The measure of angle X is 24° greater than the measure of angle Y. Find the measure of each angle.
x = 102°, y = 78°
Use elimination to solve each system of equations.
8x + 3y = -7
7x + 2y = -3
Solution (1, -5)
Provide the criteria below for the following inequalities:
-slope & y-int
-line (solid or dashed)
-shaded (above or below)
1. y <= x + 10
2. y > 6x + 2
1. slope: 1 & y-int: 10, solid line, shaded below
2. slope: 6 & y-int: 2, dashed line, shaded above
Find the value of r so the line through the pair of points has the given slope: (7, -10)(r, 4), m = -3
r = 2 1/3 or 7/3
Graph the system and determine the number of solutions that it has. If it has one solution, name it.
x = 6 - 3/8y
4 = 2/3x + 1/4y
Infinitely many
As of 2009, the New York Yankees and the Cincinnati Reds together had won a total of 32 World Series. The Yankees had won 5.4 times as many as the Reds. How many World Series had each team won?
Cincinnati: 5, New York: 27
Use elimination to solve each system of equations.
-0.4x + 0.25y = -2.175
2x + y = 7.5
Solution (4.5, -1.5)
Solve the system of inequalities by graphing. Use grid side of white board: 5x - y < -2 AND 5x - y > 6
Write the equation of the line that passes through the pair of points: (-1, -3)(-2, 3)
y = -6x - 9