So firstly, to get the slope you'll be using the formula [tex] \frac{y_2-y_1}{x_2-x_1} [/tex] . I'll be using points (3,7) and (11,23)
[tex] \frac{23-7}{11-3} =\frac{16}{8} =2 [/tex]
Now that we got the slope, to get the y-intercept we need to plug in the slope and a coordinate into the equation and solve for the y-intercept ("b").
[tex] 7=2(3)+b\\ 7=6+b\\ 1=b [/tex]
Now that we got the y-intercept, we can form our equation, which is y = 2x + 1, or C.
