Question 16213
y=-2x+5 and y=x-1 will give you two separate straight lines on a graph.
To get y= to a number you substitute x with a number and do equation to get a value for y.
Example for your 1st equation y=-2x+5 let x=2 so you get
y=-2(2)+5 which comes out to:y=1
So the point you would plot on graph (2,1)
when x=2,y=1.
so select a range of values for x say from -10 to 10 in steps of two
plug into your equation to get y values and plot on graph.
repeat for other equation.
Unfortunately I do not know how to use graph diagram on this site yet so cannot not show you.
hope this helps.
Pete