Final answer:
The equation of a line with a slope of 12 that passes through the point (4, 5) is y = 12x - 43. This is found using the slope-intercept form y = mx + b.
Step-by-step explanation:
The equation of a line in slope-intercept form is given by y = mx + b, where m represents the slope of the line, and b represents the y-intercept of the line. Given a slope of 12 and the point (4, 5) through which the line passes, we can plug these values into the slope-intercept form equation to find b.
Using the point (4, 5), the equation becomes 5 = 12(4) + b, which simplifies to 5 = 48 + b. Solving for b, we get b = 5 - 48, resulting in b = -43.
Therefore, the equation of the line is y = 12x - 43.
The correct answer is A. y = 12x - 43.