Answer:
y = 7x - 7
Explanation:
The equation for the function can be found using the slope-point form of a linear equation: y = mx + b, where m is the slope of the line and (x, y) is a point on the line.
To find the slope, we can use the two points:
m = (35 - 21) / (12 - 4) = 7
To find the y-intercept, we can substitute one of the points and the slope into the equation:
21 = 7 * 4 + b
Solving for b, we get:
b = 21 - 28 = -7
So, the equation of the line is:
y = 7x - 7