what is the equation of a line with a slope of 3 going through the point (2,1)

Answer 1

Since we need the slope to be equal to 3 the line will have an equation of the form y=3x+B where we have to find the constant B. Since we need the line to pass through the point (2,1) we have that 1=6+B or B=-5. Therefore, the equation of the line is y=3x-5.