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 determine the correct function, we first observe the changes in and their corresponding changes in . This can help us establish the slope of the function.
Let's calculate the slope using two points from the table. From to , changes from -3 to -2, resulting in a change of 1 in and 4 in . Hence the slope .
Now, let's use the point to find the y-intercept in the equation . Substituting and point in, we solve for :
This gives us the equation .
Let's verify this equation against other points in the table:
All table values satisfy the equation .
Therefore, the function that corresponds to the table is: .
Determine whether the following table represents a constant function:
Pick any two points from the table and use the formula: . For example, using (-4, -3) and (0, -2):
Look for the point where x = 0 in your table! That y-value is your y-intercept. In this table, when x = 0, y = -2, so the y-intercept is -2.
Verification is crucial! If your equation doesn't work for all points in the table, you made an error. Always substitute each x-value and confirm you get the correct y-value.
If you get different slopes, double-check your arithmetic! For a linear function, the slope should be the same between any two points. Recalculate carefully using the slope formula.
Absolutely! Using with any point from the table works great. Just remember to simplify to slope-intercept form y = mx + b at the end.
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