Write an equation of the line satisfying the following conditions. If possible, write your answer in the form y = mx + b.Passing through the points (5, 23) and (−2, 2)
Question
Write an equation of the line satisfying the following conditions. If possible, write your answer in the form y = mx + b.Passing through the points (5, 23) and (−2, 2)
Solution
To find the equation of the line, we first need to find the slope (m). The formula for the slope when given two points, (x1, y1) and (x2, y2), is:
m = (y2 - y1) / (x2 - x1)
Substituting the given points (5, 23) and (-2, 2) into the formula, we get:
m = (2 - 23) / (-2 - 5) = -21 / -7 = 3
Now that we have the slope, we can use the point-slope form of a line to find the equation. The point-slope form is:
y - y1 = m(x - x1)
Substituting m = 3 and the point (5, 23) into the equation, we get:
y - 23 = 3(x - 5)
Solving for y gives us the equation of the line in slope-intercept form (y = mx + b):
y = 3x - 15 + 23 y = 3x + 8
So, the equation of the line passing through the points (5, 23) and (-2, 2) is y = 3x + 8.
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