Question

Write the equation of a line with slope m=1/2 and including point (4, -1).


y = -2x + 3

y = 2x + 3

1/2 y=x+3
y=1/2 x-3

Answer 1

In y = mx + b form, x and y are the coordinates of your point on the line, m is the slope, and b is the y-intercept. The m and b will be numbers in your general form of the equation, but x and y will stay x and y (because they can represent any point on the line).

In this case we have m, x, and y. We can plug the values in to find b:

y = mx + b
-1 = (1/2)(4) + b
b = -3

This means the general form of the equation is: y = (1/2)x - 3 and your answer is D!

Answer 2

Thank you :)