Question

Choose the slope intercept form of the equation below that represents the line that passes through the points (-1, 2) and (9, -4)

y equals negative three over five times of x plus 4
y equals negative three over five times x plus 7 over 5
y plus 7 equals negative three over five times of x plus 4
y equals three over five times x minus 7

Answer 1

Find the slope using (y2-y1)/(x2-x1)

(-4-2)/(9-(-1)) = -6/10 = -3/5

y=-3/5(x) + b

Plug in points to solve for b

2 = -3/5(-1)+b

2 = 3/5 + b

b = 10/5-3/5 = 7/5

Therefore, y = -3/5 + 7/5