(1) 4x-12 = 34
Graph line use intercepts if only 1 intercept exists use it and another point to draw the line.
(2) -25X + Y = 55
What is the Y intercept
What is the X intercept
(1) Solving for x will give you your x-intercept. Since there is no y, it's obvious that this is a vertical (|) line running parallel to the x-axis.
(2)To find the x-intercept set y=0 and solve for x.
Solve for x
To find the y-intercepts set x=0 and solve for y.
Solve for y.
Hope that helps