Algebra 1 Semester 1 Review Ch. 4-6

Front

What is the range of the function f(x) = 2x + 4 when the domain is D={-1, 0, 2}?

Back

R={2, 4, 0}

Front

What is slope-intercept form?

Back

The slope-intercept form of a linear equation is given by y = mx + b, where m is the slope and b is the y-intercept.

Front

Write the inequality represented by the graph where x is less than or equal to 2.

Back

x ≤ 2

Front

What defines a function in mathematics?

Back

A function is a relation where each input (x-value) has exactly one output (y-value).

Front

Which of the following sets of ordered pairs is NOT a function? {(2, 1), (4, 3), (4, 2), (1, 5)}

Back

This set is NOT a function because the input 4 corresponds to two different outputs (3 and 2).

Front

What is the slope of the line represented by the equation y = 10x - 7?

Back

The slope is 10.

Front

How do you determine if a relation is a function?

Back

A relation is a function if no x-value is repeated with different y-values.

Front

What is the y-intercept of the equation 5x - y = 12?

Back

To find the y-intercept, set x = 0: y = -12, so the y-intercept is -12.

Front

Convert the equation 6x + 2y - 15 = 0 to slope-intercept form.

Back

The slope-intercept form is y = -3x + 7.5.

Front

What does it mean if a graph has a horizontal line?

Back

A horizontal line indicates that the y-value is constant for all x-values, meaning the slope is 0.