Question

Solve the following system using the graphing method.
2x - y = 5
5x + y = 2

Answer 1

Rearrange them into y=f(x) form. Can you do it from there?

Answer 2

Well look at the attachment... I don't quite understand, ceb105?

Answer 3

That question isn't clear. However it is likely asking for where the two lines intersect.

Still, you need to rearrange both into the form y=f(x), does this help or do you need more?

Answer 4

y = 2 x-5 ?

Answer 5

y=2x-5, so to help draw the line, at x=0, y=-5 and then you can see the gradient is 2 from the coefficient of x

y=2-5x and with this one you can put in x=0 and see y=2. and the gradient is negative at -5, so for every one across it goes 5 down.

Answer 6

I got y = 2 x-5 for the first and y = 2-5 x for the second.

Answer 7

Read up bud

Answer 8

so the answer is -5 (x) and 2 (y)?

Answer 9

No, thats not right, you need to graph it, have you done that?

Answer 10

solve for y and then plot the functions on your calculator. what kind of calculator do you have?

Answer 11

You've got the equations in standard form: Ax + By = C, A and B both non-zero. The x-intercept and y-intercept are given respectively by (C/A,0) and (0,C/B). Plot those two points and draw a line through them. Repeat with the other equation. Pick off the point of intersection. Hint: x = 1.

Answer 12

2x - y = 5 (1)
5x + y = 2 (2)

From 1, -y = 5 - 2x
y = -5+2x

From 2.

5x -5 + 2x = 2
7x - 5 = 2
7x = 7
x =1

Answer 13

so y =-3

Answer 14

Nice use of the graphical method there, not!