Answer:
The equation of the line would be y = 3x - 6
Step-by-step explanation:
In order to find the equation, we first need to find the slope. We can do this by using the slope equation with the points.
m(slope) = (y2 - y1)/(x2 - x1)
m = (15 - -3)/(7 - 1)
m = 18/6
m = 3
Now that we have this, we can use point-slope form along with one of the points to get the equation.
y - y1 = m(x -x1)
y + 3 = 3(x - 1)
y + 3 = 3x - 3
y = 3x - 6