Three points 4

The line passed through three points - see table:

x y
-6 4
-4 3
-2 2

Write line equation in y=mx+b form.

Correct answer:

f = -0.5x+1

Step-by-step explanation:

f(x) = m⋅ x+b  4=(−6)⋅ m+b 3=−4⋅ m+b  b−6m=4 b−4m=3  Row2−Row1→Row2 b−6m=4 2m=−1  m=2−1​=−0.5 b=4+6m=4+6⋅ (−0.5)=1  b=1 m=2−1​=−0.5  f(x)=−0.5x+1  f3​=−0.5⋅ (−2)+1=2  f=−0.5x+1

Try another example


Did you find an error or inaccuracy? Feel free to write us. Thank you!







Tips for related online calculators
The line slope calculator is helpful for basic calculations in analytic geometry. The coordinates of two points in the plane calculate slope, normal and parametric line equation(s), slope, directional angle, direction vector, the length of the segment, intersections of the coordinate axes, etc.
Do you have a system of equations and are looking for calculator system of linear equations?

You need to know the following knowledge to solve this word math problem:

Grade of the word problem:

Related math problems and questions: