Creating a Two Variable Equation

Jim paid a gym membership fee of $50, plus $20 per month.  Jim has paid a total of $290 to the gym.  How many months has Jim been a member of the gym?

• 50 + 20m = 290

• 20 + 50m = 290

• 50 + 20 = m

• 50m - 20 = 290

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CCSS.7.EE.B.4A

Casey has $50 to spend at Best Buy. She wants to buy a DVD for $14 and some CDs that cost $12 each. How many CDs can she buy?

• 12 + 14x = 50

• 12x + 14 = 50

• 50 - 14 - 12 = x

• 50x + 12 = 14

Hannah ordered books for her son from an online retailer. Each book costs $7.25 and there is a shipping fee of $6.75 for the entire order. How many books did Hannah order if her total cost was $93.75? Which equation represents the above situation?

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CCSS.HSA.CED.A.3

Greg's Bikes rents bikes for $17 plus $8 per hour. Emily paid $81 to rent a bike. For how many hours did she rent the bike? Which equation represents the above situation?

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CCSS.HSA.CED.A.3

Scott works on cars. He charges $35 for each car plus $7 per hour. How many hours did Scott work if his friend's car bill was $63.

Which equation represents the above situation?

• 7x + 35 = 63

• 7x = 63

• 7x - 35 = 63

• 35x + 7 = 63

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CCSS.HSA.CED.A.3

Remember equations are written as y=mx+b. Create the equation by finding the slope from rise/run and the y-intercept by looking at where it crosses the y-axis. You can also create an equation by making a List & Spreadsheet, Data & Statistics, Menu 4, 6, 1.

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AI.9.2.B

To create an equation when given two points you will need to make a List & Spreadsheet, Data & Statistics, Menu 4,6,1. Don't forget to turn the fractions into decimals by typing the fraction and pressing CTRL Enter.

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AI.9.2.B

Remember equations are written as y=mx+b. Create the equation by finding the slope from rise/run and the y-intercept by looking at where it crosses the y-axis. You can also create an equation by making a List & Spreadsheet, Data & Statistics, Menu 4, 6, 1.

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AI.9.2.C

Remember equations are written as y=mx+b. Create the equation by finding the slope from rise/run and the y-intercept by looking at where it crosses the y-axis.

You can also create an equation by making a List & Spreadsheet, Data & Statistics, Menu 4, 6, 1.

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AI.9.2.C

To create a SLOPE-INTERCEPT FORM equation, start by creating a T-CHART on your paper and writing y=mx+b on both sides. Then, because it says PARALLEL, that means these equations will have the same slope so you can use the 1.2 given to you and plug it into both equations. Then, use the point (5, 0) which is written as (x, y) and plug it into the first equation. Then, solve for b using Menu 3, 1. Once you find the b, plug it into the second equation.

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AI.9.2.E