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cash8812
28.10.2019 •
Mathematics
Aline passes through -1, 1 and 3, 9.
what is the equation of the line in slope-intercept form?
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Ответ:
Choice B. y = 2x + 3
Step-by-step explanation:
The slope-intercept form of the equation of a line is
y = mx + b,
where m = slope, and b = y-intercept.
We can find the slope from the 2 given points.
The slope is 2.
We now have
y = 2x + b
To find b, plug in the x- and y-coordinates of one of the points for x and y and solve for b. Let's use point (-1, 1). x = -1; y = 1.
y = 2x + b
1 = 2(-1) + b
1 = -2 + b
3 = b
b = 3
Now that we know b, the y-intercept, we plug it into the equation.
y = 2x + b
y = 2x + 3
Choice B. y = 2x + 3
Ответ:
Step-by-step explanation:
I think it’s translation because your just sliding the figure