What is the equation in slope intercept form of the line that has a slope of 2 and contains the point 1 1?

Answer 1

In slope-point form a line with slope m through point (X, Y) has equation:

y - Y = m(x - X)

→ y = mx + Y - mX

→ y = mx + c

where:

m is the slope

c = Y - mx is the intercept

→ The line with slope 2 through the point (1, 1) has equation:

y = 2x + 1 - 2×1

→ y = 2x - 1