What is the x-coordinate of the x-intercept of the line that passes through the points (3, 6) and (5, 9)?
Select one:

Answer:
x coordinate is "- 1"
Step-by-step explanation:
y = mx + b
m = (9 - 6) / (5 - 3) = 3/2
b = 6 - 3/2 x 3 = 3/2
y = 3/2 x + 3/2
x intercept: y = 0
0 = 3/2 x + 3/2
x = -1