Find an equation for the line that passes through the points −3, 4 and −1, 6.
Question
Find an equation for the line that passes through the points −3, 4 and −1, 6.
Solution
To find the equation of the line that passes through the points (-3, 4) and (-1, 6), we first need to find the slope (m) of the line. The formula for the slope is:
m = (y2 - y1) / (x2 - x1)
where (x1, y1) and (x2, y2) are the coordinates of the two points. Substituting the given points into the formula, we get:
m = (6 - 4) / (-1 - (-3)) = 2 / 2 = 1
So, the slope of the line is 1.
Next, we use the point-slope form of the equation of a line, which is:
y - y1 = m(x - x1)
Substituting the slope and one of the points into the equation, we get:
y - 4 = 1(x - (-3))
Simplifying this equation, we get:
y - 4 = x + 3
Finally, we rearrange the equation to the slope-intercept form (y = mx + b), we get:
y = x + 7
So, the equation of the line that passes through the points (-3, 4) and (-1, 6) is y = x + 7.
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