Systems of Linear Eq.
To solve the following system of equations by eliminating x, a first step would be to...
Eq. 1: 3x + 2y = -1
Eq. 2: -x + 5y = 8
What is multiply the first equation by 1/3?
or
What is multiply the second equation by 3?
The solution set for x in the following inequality is...
3x - 3 > 6
What are all values of x greater, but not equal to 3?
The sum of two numbers is 238. Their difference is 48. The two numbers are…
What is 95 and 143?
Of the following list, the number that is a perfect square is…
6, 14, 21, 25
What is 25?
The solution to the following system is...
y = -3x + 10
y = 2x + 5
What is the xy-coordinate (1, 7)?
Given the following inequality, the line that we graph will be dashed or solid...
y>-5x +3
What is dashed?
A hospital food service can serve at most 1000 meals per day. Patients on a normal diet receive 3 meals per day and patients on a special diet receive 4 meals per day. A linear inequality that describes the number of patients that can be served per day is…
What is 3x + 4y <=1000?
The GCF of the following binomial is…
6xy + 8y2
What is 2y?
If we solve for y in Eq. 1 and substitute this expression in for y in Eq. 2, the equation to be solved becomes...
Eq. 1: 3x + y = 5
Eq. 2: -2x - y = -4
What is -2x -(-3x + 5) = - 4?
The following work contains an error when solving the inequality for y. The error is...
6x - 3y > 9
-3y > 9 - 6x
y > -3 + 2x
What is the wrong inequality symbol?
or
What is flipping the sign?
A student at Ridgewood wants to start selling bracelets and necklaces to make money for a summer vacation. The bracelets cost $2 and the necklaces cost $3. She needs to make at least $500. A two variable inequality that models this situation is…
What is 2x + 3y >= 500?
By factoring out the GCF, the factored form of the following trinomial is…
8x3y2 +18xy5 + 24x2y4
What is 2xy2(4x2 +9y3 +12y2)?
The number of solutions to the following system is...
Eq. 1: 4x + 2y = 8
Eq. 2: -2x - y = -4
What is infinite solutions?
An example of a solution to the following inequality is...
-2x + 7y < 1
What is the xy-coordinate (4, 1)?
Note: Answers may vary
Mr. Earl’s flight to San Diego traveled with a tailwind at an average of 885 km/h. On the return trip to Chicago the airplane only averaged 775 km/h due to similar wind systems blowing against the plane. The approximate speed of the wind and the speed of the airplane in still air are...
What is 830 km/h and 55 km/h?
What is 830 km/h and 55 km/h?
The factored form of the following quadratic is…
2x2 + 5x + 3
What is (2x +3)(x+1) ?
An example of two linear equations whose one solution is (0,0) is...
What is y = x and y = 3x?
Note: Answers may vary
Mr. Earl will show you the graph of an inequality on GeoGebra. The equation of the inequality represented by the graph is...
What is y > 2x - 1?
Ridgewood sells its own merchandise as you all may already know. Well, suppose the school’s top selling products were the Nike SS Core Cotton T-shirt and the UA Rival Polo. The T-shirt costs $21.99 and the Polo costs $46.99 each, respectively. Suppose the school sold $636.79 throughout this past weekend. The total number of items that were sold is 21, so the number of T-shirts and Polos sold, respectively, are…
What is 14 T-shirts and 7 Polos?
The factored form of the following quadratic is…
x2 - 4
What is (x+2)(x-2)?