Equations
Name all of the opposite (inverse) operations.
Add and Subtract / Multiply and Divide
Name all of the inequality symbols: <, ≥ , ≤ , >
Less than, Greater than or equal, Less than or equal, Greater than
What is the equation to find the scale factor?
Scale factor = New/Original
Solve the equation: -4x = 36
x = -9
When do you flip the sign when solving an inequality?
When you multiply or divide by a negative number
What is the scale factor if the original has a side of 3cm and the new drawing has a side of 9cm?
Scale Factor = 3
Solve the equation: 6x - 5 = -17
x = -2
Solve the inequality: 3x - 1 < -10
x < -3
What is the scale factor if the original has a side of 10in and the new drawing has a side of 5in?
Scale Factor = 5/10 or 1/2 or 0.5
Solve the equation: x/4 + 1 = 3
x = 8
Solve the inequality: -5x + 3 ≤ -2
x ≥ 1
A basketball court is 90 feet long and 40 feet wide. If a drawing is made using a scale of 10 feet = 1 inch. What is the length and width of the drawing?
The drawing is 9 feet by 4 feet
Solve the equation 10(x - 1) = 80
x = 9
Solve the inequality: -2(x - 1) ≥ -8
x ≤ 5
The scale of a model train is 1 inch: 8 feet. One of the cars of the model train is 5 inches long. What is the length, in feet, of the actual train car?
The actual train car is 40 feet long