A line passes through the points (1,1) and (2,8). Write its equation in slope-intercept form. Write your answer using integers, proper fractions, and improper fractions in simplest form.

Respuesta :

Answer:

y = 7x-6

Step-by-step explanation:

The first step is to find the slope, using the slope formula:

m = ( y2-y1)/(x2-x1)

   = ( 8-1)/(2-1)

  = 7/1

  = 7

The slope intercept form of a line is

y = mx+b  where m is the slope and b is the y intercept

y = 7x+b

Substituting a point in for x and y

1 = 7(1) + b

1 = 7+b

-6 =b

y = 7x-6