Question

Solve the system of equations by graphing. 2x-y=8, 3x+y=-3

Answer 1

First of all for solving this question do you know the conception of : equation of linear equation and graphical knowledge too.

Answer 2

put y=2x-8 from first equation in second equation and then we get from second eqn.
3x+2x -8= -3
5x=5
x=5 and
y=2

Answer 3

i need two plotting points for both equations..

Answer 4

the easiest points are
1) put x=0 and find y
2) put y= 0 and find x

for \[2x-y=8\\
(0,?)\\
(?,0)
\]

Answer 5

we see that when \(x=0\), \(y = -8\)
and when \(y=0\), \(x = 4\)
so, we got our two points.
(0,-8)
(4,0)

Answer 6

similarly, try for the second line

Answer 7

the given value (5,2) satisfies only the first eqn but not the second

Answer 8

what points do you get for the second line?