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To find the equation of the linear function, we first need to calculate the slope (m) using the formula:
m = (y2 - y1) / (x2 - x1)
Using the points (11, 58) and (20, 103):
m = (103 - 58) / (20 - 11)
m = 45 / 9
m = 5
Now that we have the slope, we can use one of the points to find the y-intercept (b). Let's use (11, 58):
58 = 5(11) + b
58 = 55 + b
b = 58 - 55
b = 3
Therefore, the equation of the linear function is:
y = 5x + 3