Answer:
(1, -9)
Explanation:
The slope-intercept formula of a line is: y = mx + b
m = slope
b = y-intercept
We know one point already.
3 = 3(5) + b
3 = 15 + b
3 - 15 = 15 - 15 + b
-12 = b
So now we know the formula: y = 3x - 12
We can plug in 1 as x to find another point
y = 3(1) - 12
y = 3 - 12
y = -9