Write an equation that passes through (1, -6) with x-intercept = -1.

Question

this is the question: 

 

Write an equation that passes through (1, -6) with x-intercept = -1

Answer 1

You will need 2 equations in 2 unknowns as follows:

 

0 = -m + b is the intercept equation

-6 = m + b is the equation derived from the known point

Add the equations

-6 = 2b and b = -3

 

From the first equation, m = b = -3

Then y = -3x - 3 = -3(x + 1)