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Plz help asap!

What is the equation of this line in slope-intercept form?


y=−3x−1

y=−1/3x−1

y=3x−1

y = 3x + 1

Plz help asap! What is the equation of this line in slope-intercept form? y=−3x−1 y-example-1
User Kill KRT
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2 Answers

1 vote

Slope-intercept form is:

y = mx + b

"m" is the slope, "b" is the y-intercept (the y value when x = 0)

You need to find "m" and "b".


If you look at the graph, at x = 0, y is -1, so the y-intercept is -1.

y = mx - 1

To find the slope, you use the slope formula, and plug in the points (-1,2) and (1,-4):


m=(y_(2)-y_(1))/(x_(2)-x_(1))


m=(-4-2)/(1-(-1))


m=(-4-2)/(1+1)


m=(-6)/(2)

m = -3


y = -3x - 1 The first choice is your answer

User Guiem Bosch
by
5.2k points
3 votes

Answer:

y=-3x-1

Explanation:

This is the answer because the y intercept is at -1 and the pattern is down 3 right one so therefor y=-3x-1 is the answer

User Jottr
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5.0k points