Alg2A Review for Test 1: History and Inequalities

Front

Who invented the coordinate plane in the 1600s, helping to shape the concept of the number line?

Back

René Descartes

Front

What mathematical concept did people begin to accept as real quantities around the time of René Descartes?

Back

Negative numbers

Front

What is the name of the vertical axis?

Back

y-axis

Front

What does a filled-in circle on a number line represent when graphing inequalities?

Back

The endpoint is included.

Front

What should you do at 1 on the number line to graph the inequality x ≤ 1?

Back

Draw a filled-in circle at 1 and shade to the left.

Front

Which inequality represents all numbers greater than -4?

Back

x > -4

Front

What is the correct inequality for all numbers between -7 and 1, not including -7 and 1?

Back

-7 < x < 1

Front

Inequality representing all numbers from -2 to 6, including both endpoints.

Back

-2 ≤ x ≤ 6

Front

Which inequality represents all numbers greater than or equal to -4?

Back

x ≥ -4

Front

What is the correct inequality for all numbers between -8 and -2, not including -8 and -2?

Back

-8 < x < -2