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ani61
27.04.2020 •
Mathematics
What is the equation of line l?
y = -x - 1
y = x + 1
y = 3x - 3
y = -3x - 3
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Ответ:
y = 3x-3
Step-by-step explanation:
The line has a y intercept of -3 (where it crosses the y axis)
We know the slope is positive since it goes up from left to right
The only answer with a positive slope and a y intercept of -3 i
y = 3x-3
Ответ:
To find the equation of this line, let's first find the y-intercept of the line which is the point where the line crosses the y-axis.
To find the y-intercept, we start at the origin.
We go 0 units to the left or right and 3 units down.
So that's (0, -3).
Now we can confirm that the y-intercept is -3.
So for any of the equations that have a y-intercept that's not -3, we can immediately eliminate them.
So we can eliminate y = -x - 1 and y = x + 1.
Now we have two equations left, y = 3x - 3 and y = -3x - 3.
Now we have to look at our line.
Remember that positive slopes go up and negative slopes go down so we can confirm that the equation won't have a slope of -3.
So therefore, the equation is y = 3x - 3.
Ответ: