For this case we have that by definition, the equation of a line in the slope-intersection form is given by:
Where:
m: Is the slope
b: Is the cut-off point with the y axis
According to the data of the statement we have two points through which the line passes:
![(x_ {1}, y_ {1}): (0,1)\\(x_ {2}, y_ {2}): (2,7)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/y3ww697a98k3djf4hcwop1jxfdotqfojey.png)
We found the slope:
![m = \frac {y_ {2} -y_ {1}} {x_ {2} -x_ {1}} = \frac {7-1} {2-0} = \frac {6} {2} = 3](https://img.qammunity.org/2020/formulas/mathematics/middle-school/wbg9meaw6slxnhscqndco0x8wd05kkvfjp.png)
Thus, the equation is of the form:
![y = 3x + b](https://img.qammunity.org/2020/formulas/mathematics/high-school/guruavnyacrogfbtqpqgza41ja773sbtub.png)
We substitute one of the points and find "b":
![1 = 3 (0) + b\\1 = b](https://img.qammunity.org/2020/formulas/mathematics/middle-school/difzfqd4526oy1iid6eqvq9ctb1yqg4lez.png)
Finally, the equation is:
![y = 3x + 1](https://img.qammunity.org/2020/formulas/mathematics/middle-school/vtivj0427kt8j79ic49ru88d2bji85822a.png)
Answer:
![y = 3x + 1](https://img.qammunity.org/2020/formulas/mathematics/middle-school/vtivj0427kt8j79ic49ru88d2bji85822a.png)