Which of the following equations corresponds to the function represented in the table?
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Which of the following equations corresponds to the function represented in the table?
To solve this problem, follow these steps:
Let's verify the equation with all pairs:
Each of the calculated -values using aligns with the respective -values from the table.
Therefore, the correct equation that represents the function is .
Determine whether the following table represents a constant function:
Pick any two points and use slope = (change in Y) ÷ (change in X). For example, from (-3, -2) to (-1, 0): slope = (0 - (-2)) ÷ (-1 - (-3)) = 2 ÷ 2 = 1.
That's why you must test all points! For instance, works for (-3, -2) but fails for (-1, 0). Only the correct equation works for every single point.
Linear equations from tables are usually in slope-intercept form , where m is the slope and b is the y-intercept.
Look for consistent changes. In linear functions, when X increases by the same amount, Y should also change by the same amount each time. If X goes up by 2 and Y goes up by 2 each time, the slope is 1.
Yes! Any two points from a linear function will give you the same slope. But remember to verify your equation with all the other points to make sure it's correct.
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