Question

Find the equation of the line below. Arrange your answer in the form y = mx + b, where b is the constant. (Note: in this answer make sure your x has a coefficient) where the cordinates are (-2,-1), (2,1)

Answer 1

First, remember that the slope of the line is the "rise" over the "Run"..it measures how fast the line is increasing/decreasing. The way of calculating it is \[\frac{ y_2-y_1 }{x_2 -x_1 }\], where \[(x_1,y_1)\] and \[(x_2,y_2)\] are your two points. (note it doesn't matter which point that you as your first piont, as long as you're consistant)

Once you've calculated your slope, that becomes your 'm' in the form y=mx+b. From that, you just plug in one of the two points you have, the second being the y value, the first being the x, to solve for b.

If you needmore help, ask and I'm sure someone can dig in!

Answer 2

so could you show me how i would set up my equation:)

Answer 3

Well, do you see how to calculate the slope? Subtract the two y values, divide by subtracting the two x values. (Make sure you do them in the same order!). That will form your m.

Answer 4

oh,i see now.duh.thank you:)

Answer 5

No problem.