8th Math - Week 17

Front

What are the steps needed to solve the equation 5a - 6 = 4?

Back

Add 6 to both sides and divide both sides by 5.

Front

What is a function?

Back

A relation where each input has exactly one output.

Front

What is the difference between a radius and a diameter of a circle?

Back

A radius is half the length of a diameter; the diameter passes through the center and connects two points on the circle.

Front

Solve for a: 20 = 2 + a

Back

a = 18.

Front

What is a mapping in mathematics?

Back

A way to show how each element from one set is paired with an element from another set.

Front

Is the mapping {(1,2), (2,3), (1,4)} a function?

Back

Not a Function, because the input 1 has two different outputs.

Front

What is the formula for finding the area of a circle?

Back

Area = πr², where r is the radius.

Front

What does it mean for an equation to be balanced?

Back

Both sides of the equation have the same value.

Front

How do you isolate a variable in an equation?

Back

Perform inverse operations to get the variable alone on one side.

Front

What is the slope of a line?

Back

The slope is the ratio of the rise (change in y) to the run (change in x).