Answer: The required equation of the line is [tex]x-y=0.[/tex]
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
[tex]m=\dfrac{d-b}{c-a}.[/tex]
So, the slope of the given line will be
[tex]m=\dfrac{-3+4}{-3+4}=\dfrac{1}{1}=1.[/tex]
Since the line passes through the point (-3, -3), so its equation will be
[tex]y-(-3)=m(x-(-3))\\\\\Rightarrow y+3=1(x+3)\\\\\Rightarrow y+3=x+3\\\\\Rightarrow y=x\\\\\Rightarrow x-y=0.[/tex]
Thus, the required equation of the line is [tex]x-y=0.[/tex]