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.

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.B.5

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.

Tags

CCSS.8.EE.B.6

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).

Tags

CCSS.8.EE.C.8C

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.

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

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).

Tags

CCSS.4.G.A.1

CCSS.HSG.CO.A.1

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).

Tags

CCSS.8.EE.B.5

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).

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

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.

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2