1 Answer

Since this was posted two years ago, I thought I'll try answering using Microsoft Word. I still need practice! How do you make a graph?

Write an Equation in Slope – Intercept Form

 A line passes through (4, 2) and (0, -1)

                                         x₁  y₁        x₂  y₂

1. Slope:   m = y₂ – y₁  / x₂ – x₁           

                         -1 – 2 / 0 – 4

                           m = -3/-4

                           m = 3/4

2. Y – Intercept:  y = mx + b > use either ordered pair

                            2 = 3/4(4) + b

                            2 = 12/4 + b

                            2 = 3 + b

                            -3   -3____

                             -1 = b

3. Plug – in > write equation:

                           y = mx + b

                            y = 3/4x - 1  

If you graph this equation starting on the y-axis -1, move up 3 then to the right 4, repeat, move up 3 to the right 4. You will see (4, 2) and (0, -1)  on the graph.

Colleen

I think it looks very professional. Can't follow it because I suck at math but it looks professional all the same :)