ADV 2nd 9 Weeks

Flashcard
•
Mathematics
•
8th Grade
•
Hard
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a scale factor?
Back
A scale factor is a number that scales, or multiplies, some quantity. In geometry, it is the ratio of the lengths of two corresponding sides of two similar figures.
2.
FLASHCARD QUESTION
Front
How do you find the scale factor of an enlargement?
Back
To find the scale factor of an enlargement, divide the length of a side of the enlarged figure by the length of the corresponding side of the original figure.
3.
FLASHCARD QUESTION
Front
What is point-slope form of a linear equation?
Back
Point-slope form is an equation of a line in the form y - y1 = m(x - x1), where (x1, y1) is a point on the line and m is the slope.
4.
FLASHCARD QUESTION
Front
How do you convert a point-slope equation to slope-intercept form?
Back
To convert from point-slope form to slope-intercept form (y = mx + b), solve for y by distributing and isolating y.
5.
FLASHCARD QUESTION
Front
What happens to a point when it is rotated 180 degrees about the origin?
Back
When a point (x, y) is rotated 180 degrees about the origin, its image is (-x, -y).
6.
FLASHCARD QUESTION
Front
What is slope-intercept form of a linear equation?
Back
Slope-intercept form is an equation of a line in the form y = mx + b, where m is the slope and b is the y-intercept.
7.
FLASHCARD QUESTION
Front
How do you find the slope of a line given two points?
Back
The slope (m) of a line given two points (x1, y1) and (x2, y2) is calculated using the formula m = (y2 - y1) / (x2 - x1).
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