What is the y-intercept of a linear equation?
Warm-Up 11/6

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Mathematics
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9th - 12th Grade
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Hard
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1.
FLASHCARD QUESTION
Front
Back
The y-intercept is the point where the line crosses the y-axis, represented as (0, b) in the equation y = mx + b.
2.
FLASHCARD QUESTION
Front
How do you evaluate a function at a specific point, for example, f(1) if f(x) = 2x + 1?
Back
To evaluate f(1), substitute 1 for x in the function: f(1) = 2(1) + 1 = 3.
3.
FLASHCARD QUESTION
Front
What does the slope of a line represent?
Back
The slope represents the rate of change of the y-value with respect to the x-value, calculated as m = (y2 - y1) / (x2 - x1).
4.
FLASHCARD QUESTION
Front
How do you find the slope of a horizontal line?
Back
The slope of a horizontal line is 0, indicating that there is no change in the y-value as the x-value changes.
5.
FLASHCARD QUESTION
Front
What is the formula for 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.
6.
FLASHCARD QUESTION
Front
How do you evaluate f(-2) if f(x) = x + 3?
Back
To evaluate f(-2), substitute -2 for x: f(-2) = -2 + 3 = 1.
7.
FLASHCARD QUESTION
Front
What is the definition of slope in the context of a linear function?
Back
Slope is defined as the ratio of the vertical change to the horizontal change between two points on a line.
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