2x+y=9 i dunno what to do?

Question

i need to points that go through that a (#,#) b (#,#)

Answer 1

You need to graph it, which means you'll need to get it into linear format:

9-2x =y or y = -2x + 9

Then input the numbers for point a, then point b.

Good luck.

Answer 2

What is it you are trying to do???

Graph it, or solve it for y or x???

The easiest way to graph it is to sovle for y

y = -2x + 9

-2 is the slope of the line, and 9 is the y intercept.

You can also just plug values for x into the equation and note what value of y is the result, then graph the pairs of numbers.

Now I see you are looking for two points- a (#,#) and b (#, #)

So you can graph it and see what points the line passes through or you can plug an x value into the equation as explained above to find your points.

Answer 3

y = -2x + 9

Plug in any number to x -- the answer you receive from the equation is your y. That would be your first set of coordinates.

Repeat.

Answer 4

2x + y = 9
-2x -2x

y = -2x + 9

2x + (-2x + y) = 9

y = 9

2x + 9 = 9
-9 -9

2x = 0

x= 0

(0, 9) is the answer