Question

Write an equation of a line in y = mx + b form that passes through the points (5,3)
and (15,1)

Answer 1

Answer:

$y = - 0.5x + 5.5$

Step-by-step explanation:

finding the slope

$\frac{3 - 1}{5 - 15} = - \frac{1}{2}$

m is the slope

$- 0.5x + b = y$

we can get y from any point but that goes for x,too

$- 0.5(5) + b = 3 \\ b = 2.5 + 3 \\ b = 5.5$

the equation is

$y = -0.5x + 5.5$