8th Ch. 3 Flashcard Review

Front

What is the y-intercept in the equation y = -2x + 5?

Back

The y-intercept is 5.

Front

If f(x) = -4 + \frac{x}{4}, what is the value of x when f(x) = -4?

Back

The value of x is 0.

Front

Identify the graph with an x-intercept of 3 and a y-intercept of -1.

Back

The graph intersects the x-axis at (3, 0) and the y-axis at (0, -1).

Front

What is the domain of the function if it is defined as {-6 ≤ x ≤ 6}?

Back

The domain includes all x values from -6 to 6, inclusive.

Front

If f(x) = 2x + 1, what is the first step to find f(1)?

Back

Plug a 1 in for all the x's.

Front

What does the x-intercept represent in a graph?

Back

The x-intercept is the point where the graph crosses the x-axis, meaning y = 0.

Front

What is the slope-intercept form of a linear equation?

Back

The slope-intercept form is y = mx + b, where m is the slope and b is the y-intercept.

Front

How do you find the slope between two points (x1, y1) and (x2, y2)?

Back

The slope m is calculated as m = \frac{y2 - y1}{x2 - x1}.

Front

What is the significance of the y-intercept in a linear equation?

Back

The y-intercept indicates the value of y when x = 0.

Front

What does it mean if a function is defined as f(x) = mx + b?

Back

It means the function is linear, with m as the slope and b as the y-intercept.