Finding Solutions to Equations

Is g=11 a solution?

• Yes

• No

Is b=3 a solution?

• Yes

• No

Is k=12 a solution?

• Yes

• No

What is the solution of the system

y = 2x − 1

y = −3x − 11

The cost to take pictures at a school dance is $200 for the photographer and $3 per print. The dance committee plans to charge $5 per print.

What equation represents the number of prints they need to sell to break even.

Mathematical Equivalence

ON

Damien has saved all of his allowance for a year to pay for guitar lessons and has a total of $550 in savings. His friend Kira is just starting to save and has $50 so far. Each week Damien will pay Kira $25 for a guitar lesson and Kira will save the money in her savings account. In how many weeks will their accounts have the same amount

Point of intersection:​ (a)   Break-even point: ​ (b)   bookmarks.

At least ​ (c)   bookmarks must be sold to make a profit

• (25, 60)

• (60,25)

• (0,0)

• (0,40)

• 60

• 40

• 0

• 25

• 26

• -17.5

• 162.5

• 197.5

• 342.5

The calculator solution to cosx=0.3 is 72.5 What is the other solution when 0≤x≤360

• 17.5

• 107.5

• 287.5

• 252.5

• 162.3

• 163.3

• 196.7

• 343.3