Linear Equations

Valley Video charges a $15 annual fee plus $3 per movie for rentals. Last year, Jennifer spent $99 at the video store. How many movies did she rent? Write the linear equation and solve for the number of movies.

• 15x + 3x = 99    and 6 movies
• 15x + 3 = 99 and 6 movies
• 3x + 15 = 99 and 28 movies
• 3x + 99 = 15 and 28 movies

A camp charges families a fee of $625 per month for one child and a certain amount more per month for each additional child. Use the graph to write an equation in slope-intercept form to represent the amount a family with x additional children would pay.

• y = 625x + 225
• y = 225x 
• y = 225x + 625
• y =  625

A driving range charges $4 to rent a golf club plus $2.75 for every bucket of golf balls you hit. Write an equation that shows the total cost c of hitting b buckets of golf balls.

• c = 2.75b + 4
• c = 2.75b
• c =  4b- 2.75
• c = 2.75b - 4

For lunch, Amanda had a hamburger and potato chips. The hamburger totaled 325 calories and each chip had 12 calories. Write a liner equation to represent the situation.

• y = 12 + 325
• y = 12x  + 325
• y = 325 - 12x
• y = 325x + 12

Think y=mx+b

• A
• B
• C
• D

Create a table of this graph.

• JUST DRAW THE TABLE ON YOUR NOTES AND CHECK WITH ME!
• B

What is K, the constant of proportionality?

• 105
• 525
• 1575
• 175

Write an equation to represent the table.

• y=15x
• y=30x
• y=15x+10
• y=30x+10

What is slope intercept form?

• y = kx
• y - y1 = m (x - x1)
• y = mx + b
• Ax + By = C

Which equation matches the graph? 

• y = 3x 
• y = x + 3
• y = ⅓x
• y = x - 3