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Writting the equation of the line n slope- intercept form (-2,10) and (5,-4)

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User EmilyJ
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1 Answer

2 votes

Answer:

y= -2x+6

Explanation:

To write the equation of a line in slope-intercept form (y = mx + b), you need to find both the slope (m) and the y-intercept (b). You can use the given points (-2, 10) and (5, -4) to find these values.

First, calculate the slope (m) using the formula:

m = (y2 - y1) / (x2 - x1)

Let's use the points (-2, 10) and (5, -4):

m = (-4 - 10) / (5 - (-2))

m = (-4 - 10) / (5 + 2)

m = (-14) / (7)

m = -2

Now that you have the slope (m), you can use one of the points, say (-2, 10), to find the y-intercept (b) in the equation y = mx + b:

10 = (-2)(-2) + b

Now, solve for b:

10 = 4 + b

Subtract 4 from both sides:

b = 10 - 4

b = 6

So, you've found that the slope (m) is -2, and the y-intercept (b) is 6. Now, you can write the equation of the line in slope-intercept form:

y = -2x + 6

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