Equation of a line in point slope form passing through (8,2) and (4,5)

1 answer:

3 0

The equation of a line is typically written as y=mx+b where m is the slope and b is the y-intercept.

If you a point that a line passes through, and its slope, this page will show you how to find the equation of the line.

what does m equal?

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What is the equation, in slope-intercept form, of the line that is perpendicular to the line

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Answer:

y = x - 1 (third answer choice)

Step-by-step explanation:

From the given we see immediately that the slope of this line is -1. The slope of a line perpendicular to this one is +1, which is the negative reciprocal of -1. The slope-intercept form is y = mx + b. To find b, the y-intercept, we make the following substitutions: m = -1, y = -2, x = -2:

-2 = +1(-2) + b, or +1 = 2 + b, or b = -1

and so the desired equation is y = x - 1 (third answer choice)

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What’s (2.5,6) dilated by a scale factor of 2?

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Answer:(5,12)

Step-by-step explanation: 2.5 x 2= 5

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