Question

What is the slope-intercept form of the equation of the line that passes through the points (9,5) and (4,1)

Answer 1

Y-y1 / x-x1 to get slope
5 - 1 / 9 - 4
m (slope) = 4/5
plug in one point to get b
1 = 4/5(4) + b
1 = 16/5 + b
b = -15/5
y = 4/5x - 15/5