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!