Answer:
Your equation is: y = 4x -1
Explanation:
We have 2 points, (2, 4), (2,7)
The first thing we need to do is find the slope:
m = (difference in y)/(difference in x) = (y2-y1)/(x2-x1)
m = (2-4)/(2-7) = 0.4
Your slope intercept form of y = mx + b will be
y = 0.4x + b
We can use either given point to substitute in for (x, y)
and find b. Let's use (2, 7):
7 = 4(2) + b
7 = 8 + b
7-8 = b
-1 = b