Answer: The required equation of the line is
![x-y=0.](https://img.qammunity.org/2020/formulas/mathematics/college/kopuukgk2mhtr458jgpoluuu9l2j6zr3n7.png)
Step-by-step explanation: We are given to to find the equation of a straight line in the standard form Ax + By = C passing through the points (-4, -4) and (-3, -3).
We know that the slope of a line passing through the points (a, b) and (c. d) is given by
![m=(d-b)/(c-a).](https://img.qammunity.org/2020/formulas/mathematics/middle-school/l994x5mgafn1iyxedhlpex60fr6oq9126v.png)
So, the slope of the given line will be
![m=(-3+4)/(-3+4)=(1)/(1)=1.](https://img.qammunity.org/2020/formulas/mathematics/college/g3sdbty6gdmpu9zhpz229yxbzihj6lcl9t.png)
Since the line passes through the point (-3, -3), so its equation will be
![y-(-3)=m(x-(-3))\\\\\Rightarrow y+3=1(x+3)\\\\\Rightarrow y+3=x+3\\\\\Rightarrow y=x\\\\\Rightarrow x-y=0.](https://img.qammunity.org/2020/formulas/mathematics/college/m079p6teru8dkbh5nmr1qfohuwj0d3vrto.png)
Thus, the required equation of the line is
![x-y=0.](https://img.qammunity.org/2020/formulas/mathematics/college/kopuukgk2mhtr458jgpoluuu9l2j6zr3n7.png)