Question: Determine whether the given points are on the graph of $$y = 2x + 3$$.
Select all points that lie on the graph.
$$(0,2)$$
$$(0,3)$$
$$(3,4)$$
$$(3,9)$$
1. **State the problem:** We need to check which of the points $$(0,2), (0,3), (3,4), (3,9)$$ lie on the graph of the linear equation $$y = 2x + 3$$.
2. **Formula used:** The equation of the line is $$y = 2x + 3$$. A point $$(x,y)$$ lies on the graph if substituting $$x$$ into the equation gives the corresponding $$y$$.
3. **Check each point:**
- For $$(0,2)$$: Substitute $$x=0$$ into $$y=2x+3$$:
$$y = 2(0) + 3 = 3$$
The point has $$y=2$$ but the equation gives $$3$$, so $$(0,2)$$ is **not** on the graph.
- For $$(0,3)$$: Substitute $$x=0$$:
$$y = 2(0) + 3 = 3$$
The point has $$y=3$$ which matches, so $$(0,3)$$ **is** on the graph.
- For $$(3,4)$$: Substitute $$x=3$$:
$$y = 2(3) + 3 = 6 + 3 = 9$$
The point has $$y=4$$ but the equation gives $$9$$, so $$(3,4)$$ is **not** on the graph.
- For $$(3,9)$$: Substitute $$x=3$$:
$$y = 2(3) + 3 = 9$$
The point has $$y=9$$ which matches, so $$(3,9)$$ **is** on the graph.
4. **Final answer:** The points on the graph are $$(0,3)$$ and $$(3,9)$$.