Graphing
Substitution
Elimination/Word Problems
Matrices
Do you know Ms. K?
100
What is the solution to this system?
(2, -3)
100
Solve for x and y.
y=5x-14
-x-3y=10
(2, -4)
100
3x+5y=2
4x-2y=-6
(-1,1)
100
A = [[-1, 5],[0,-2]] and B = [[3, 2], [-2,-5]]
Find B-A
B - A = [[4, -3],[-2,-3]]
100
What anime is Ms. K watching right now? (just finished, actually)
Jujustu Kaisen
200
What is the solution to this system?
-5x+6y=25
-7x+8y=33
(1, 5)
x = 1, y = 5
200
How many solutions does this system have?
y = 1/3x-2
2x-4y=8
One solution
200
What is the x coordinate equal to for this system?
-9x+4y=-2
3x-8y=-26
x = 2
200
Find A+B
A = [[-1, 5],[0,-2]] and B = [[3, 2], [-2,-5]]
[[2, 7],[-2,-7]]
200
What was today's daily picture?
A giant alien head that I crocheted for Oscar
300
How many solutions does this system have?
x+2y=4
3x+6y=18
None!
300
-3x+y=2
y=-x-2
(-1, -1)
300
A street vendor sells 2 types of newspapers, one for $0.25 and the other for $0.40. If she sold 100 newspapers total and made $28.00, how many $0.25 newspapers did she sell?
80
300
Find 2A+B
A = [[-1, 5],[0,-2]] and B = [[3, 2], [-2,-5]]
[[1, 12],[-2,-9]]
300
What clubs does Ms. K sponsor?
Crochet Club (Tuesdays) and Mycology (mushroom) club (every other Friday)
400
What does a need to be to have no solution? (hint: go into desmos and add a slider for a)
ax-2y=5
-6x+4y=7
a = 3
400
y=1/2x-8
y=-2x-3
(2,-7)
400
The most popular items at a bakery are its raspberry scones and its lemon poppy seed muffins. The shop sells both items in boxes of 12 at a cost of $15 per box of raspberry scones and $9 per box of lemon poppy seed muffins. On Friday and Saturday, the shop earned $396 by selling a total of 42 boxes of these two items. If r and l represent the number of boxes of raspberry scones and lemon poppy seed muffins sold over the two-day period, respectively, write and solve a system of equations that could be used to find the number of boxes of each type of item sold.
r+l=42
15r+9l=396
r=3, l=39
400
Put the following equations in a Matrix. (don't solve)
x+y+z=2
y-3z=1
2x+y+5z=0
[[1, 1, 1, 2],[0,1,-3,1],[2,1,5,0]]
400
What is in that jar that Ms. K says is her anxiety medicine?
Reishi mushroom!