Unit 2 Test Practice

Front

What is the range of a graph?

Back

The range of a graph is the set of all possible output values (y-values) that a function can produce based on its domain.

Front

What is the slope of a line perpendicular to y = -1/2x + 5/2?

Back

The slope of a line perpendicular to another is the negative reciprocal of the original slope. For y = -1/2x + 5/2, the slope is -1/2, so the perpendicular slope is 2.

Front

If a clothing store sells shirts for $15 each and pants for $25 each, how do you set up an equation to find the number of pants sold?

Back

Let s be the number of shirts and p be the number of pants. The equations are: s + p = 12 (total items) and 15s + 25p = 270 (total sales).

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 x-intercept of a linear equation?

Back

To find the x-intercept, set y = 0 in the equation and solve for x.

Front

What does the term 'perpendicular lines' mean in geometry?

Back

Perpendicular lines are lines that intersect at a right angle (90 degrees).

Front

What is the formula for calculating the slope between two points (x1, y1) and (x2, y2)?

Back

The slope (m) is calculated as m = (y2 - y1) / (x2 - x1).

Front

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

Back

The y-intercept is the point where the line crosses the y-axis, representing the value of y when x = 0.

Front

How do you convert the standard form of a linear equation to slope-intercept form?

Back

To convert from standard form Ax + By = C to slope-intercept form, solve for y: y = (-A/B)x + (C/B).

Front

What is a linear equation?

Back

A linear equation is an equation that represents a straight line when graphed, typically in the form y = mx + b.