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A linear function has a slope of 2/3 and goes through the point (3,6). What is the y-intercept?

A. (0,4)
B. (0,6)
C. (3,6)
D. (2,3)

User SPoage
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1 Answer

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Final answer:

The y-intercept of a linear function with a slope of 2/3 passing through (3,6) is (0,4). This is found by using the point-slope form of a linear equation and plugging in the known values.

Step-by-step explanation:

The student's question asks to find the y-intercept of a linear function with a given slope of 2/3 that passes through the point (3,6). To find the y-intercept, we can use the point-slope form of a straight line equation, which is y - y1 = m(x - x1), where m is the slope and (x1, y1) is a point on the line.

Substituting the given point (3,6) and the slope 2/3 into the equation, we have:
y - 6 = (2/3)(x - 3).
Expanding this equation to find y when x is 0 gives us the y-intercept:
y = (2/3)(0 - 3) + 6
y = (2/3)(-3) + 6
y = -2 + 6
y = 4.

So, the y-intercept is at the point (0,4), which corresponds to option A. Therefore, the correct answer to the student's question is A. (0,4).

User MrEbbinghaus
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