Answer:
[tex]1) \: \: y = - \frac{1}{2} x + 3[/tex]
[tex]2) \: \: y = 2x - 5[/tex]
[tex]3) \: \: y = x + 2[/tex]
Step-by-step explanation:
In finding the equation of the line, we need two things, one is slope, and the other is the y-intercept.
Let's start with the easier one. The y-intercept is where the line hits the y-axis. As you can see, that point is written as the constant in the equation.
The slope tells us how steep the graph is. For example, in the first one, x increases by 2 as y decreases by 1. We write the slope as y over x, thus -1/2.
Hope this helps!
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