Question

Help! Write the equation of a line that passes through the point (-2, 1) and has a slope of 4.

Answer 1

y = mx + b

y = 4x + b ... plug in the given slope m = 4

1 = 4(-2) + b ... plug in the given point

1 = -8 + b

...
...

b = ???

Answer 2

Use on point slope form:
\[y - y_1 = m(x - x_1)\]

here m = 4, \(x_1\) = -2 and \(y_1\) = 1