Writing Linear Equations

In the equation Y=MX+B

M is the _____ that gets multiplied.

• Slope / Constant Rate

• Y-intercept / Initial Fee

In a word problem, the Initial Fee / Y-Intercept (B) is either ________ or ________

(CLICK ON 2)

• a one time fee

• the amount you start with

• November

What words might help you find the Slope/Constant Rate? (CLICK 2)

• Each

• One Time...

• Per

• In the beginning...

The key words "per, each, for every" mean...

• Slope / Constant Rate of Change

• Y-Intercept / Initial Fee

• Wednesday

Bob has $150 in his savings account

and saves $40 per month.  

Which equation represents the amount

Bob has in his account after x months?

• y = 150 + 40
• y = 40x + 150
• y = 150x + 40

In a word problem, what does the y-intercept/initial fee tell you? (CLICK ON 2)

• How much you start with

• Something that you do once

• Something that you do over and over again

Sonya has $40 in her lunch account

and pays $2 each day to eat lunch.  

Which equation can be used to find the amount of money

Sonya has left on her account after x days?

• y = 2x + 40

• y = - 2x + 40

• y = 40x + 2

• y = -40x + 2

In the equation Y = MX + B

B is the________

• Slope / Constant Rate

• Y-Intercept / Initial Fee

Jim paid a one time gym membership fee of $50, plus $20 per month.    

Which y=mx + b matches this situation?

• y= 20x + 50

• y = 50x + 20

• y = -20x + 50

• y = 20x - 50

It costs $4 per month to gym plus a $30 one time fee at the beginning.

In this situation, which number is the y-intercept/initial fee (B) value?

• $4

• $30

• $7.50