The sterplot shows the relationship between two variables, x and y . A line of best

Choice A is correct. The line of best fit shown has a positive slope and intersects the y-axis at a positive y-value. The graph of an equation of the form $y=mx+b$, where $m$ and $b$ are constants, has a slope of $m$ and intersects the y-axis at a y-value of $b$. Of the given choices, only $y=x+3.4$ represents a line that has a positive slope, $1$, and intersects the y-axis at a positive y-value, $3.4$.

Choice B is incorrect. This equation represents a line that intersects the y-axis at a negative y-value, not a positive y-value.

Choice C is incorrect. This equation represents a line that has a negative slope, not a positive slope.

Choice D is incorrect. This equation represents a line that has a negative slope, not a positive slope, and intersects the y-axis at a negative y-value, not a positive y-value.