Unit 2 On-level Review
Flashcard
•
Mathematics
•
9th Grade
•
Practice Problem
•
Hard
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8 questions
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1.
FLASHCARD QUESTION
Front
What is a linear equation?
Back
A linear equation is an equation that makes a straight line when graphed. It can be written in the form y = mx + b, where m is the slope and b is the y-intercept.
2.
FLASHCARD QUESTION
Front
How do you find the point of intersection of two linear equations?
Back
To find the point of intersection, solve the two equations simultaneously. This can be done using substitution or elimination methods.
3.
FLASHCARD QUESTION
Front
What is the slope of a line?
Back
The slope of a line is a measure of its steepness, calculated as the rise over run (change in y over change in x).
4.
FLASHCARD QUESTION
Front
What does it mean for two lines to be parallel?
Back
Two lines are parallel if they have the same slope and will never intersect.
5.
FLASHCARD QUESTION
Front
What does it mean for two lines to be perpendicular?
Back
Two lines are perpendicular if the product of their slopes is -1, meaning they intersect at a right angle.
6.
FLASHCARD QUESTION
Front
How do you set up an equation for a word problem involving costs?
Back
Identify the fixed costs and variable costs, then express the total cost as a function of the number of items or people involved.
7.
FLASHCARD QUESTION
Front
What is a system of equations?
Back
A system of equations is a set of two or more equations with the same variables. Solutions to the system are the points where the equations intersect.
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