Answer:
To get the equation for a line, all you need to do is determine the slope and Y intercept.
For the first question the equation is y=4x, the next equation is y=-5x, and the last equation is y=1/2x
Hope this makes sense!
Step-by-step explanation:
To find the slope, find the rise over run of the line. So the rise is how far up or down on the y axis the next point is, and the run is how far left or right the line goes on the line. Once you've found those two numbers write them as a fraction rise/run. Later on, graphs will intersect the y axis at different points and you just add that value to the end of the equation. y=m(x)+b.
