The line equation in slope-intercept form is y = mx + b, where m is the slope and b is the y-intercept.

Write the two functions as co-ordinates.

First find the slope

       (Substitute )

             (Product of two same signs is positive)

                     (Subtract: – 11 + 8 = – 3 and – 8 + 4 = – 4)

                        (Simplify) \ \

Next find the y-intercept

Substitute the slope and the coordinates of the given point in slope-intercept form equation.

y = mx + b

             (Substitute for m, – 4 for x, and – 8 for y)

                     (Cancel common terms)

– 8 + 4 = – 4 + 4 + b         (Add 4 to each side)

– 8 + 4 = b                        (Apply additive inverse property: – 4 + 4 = 0)

b = – 4                              (Add: – 8 + 4 = – 4 )

Finally write the line equation

Substitute the values of slope ‘m’ and y-intercept ‘b’ in slope intercept form line equation.

y = mx + b

            (Substitute for m and – 4 for b)

                      (Product of two different signs is negative)

The function is .