-4x+8y=8 what is the answer?

Answer 1

-4x + 8y = 8.

If you want x in terms of y, subtract 8y from both sides, then divide both sides by -4 to get x=2y - 2

If you want y in terms of x, add 4x to both sides, then divide both sides by 8 to get y = x/2 + 1

Answer 2

It looks like there may be more to the question that got left out.

But first thing you might notice is you can simplify the equation by dividing by 4 to get:

-x+2y=2

Then you might put this is standard slope intercept form, solving for y:

2y=x+2 divide both sides by 2 to get:

y=(1/2)x + 1. This is the standard slope intercept form of a linear equation, y=mx+b where m=slope and b=y-intercept

You can graph this. It's a straight line through the point (0,1) with a slope of 1/2

For any value of x, you can solve for y.

Graphically the y-intercept is 1. That's the point where the line crosses the y-axis or vertical axis

and the x-intercept, where the line crosses the x-axis or horizontal axis is -2 or the point (-2,0)

Take those two intercepts and connect them with a straight line, extending forever in both directions.

Connect (0,1) and (-2,0) with a straight edge. That's the straight line that's the graph of the original equation. IF you have an x value, plug it into the equation and solve for y. If you have a known y value, plug it into the equation and solve for x.