A line with a slope of 4 passes through point (2,1). What is the equation of this line ?

Question

a line with a slope of 4 passes through point (2,1). What is the equation of this line?

Answer 1

slope = m = 4

y=mx+b

y=4x+b, plug in the point to calculate b, the y intercept

1=4(2) + b

b = 1-8 = -7

y=4x - 7 is the line with slope 4 that goes through (2,1)