Question

Can someone help me out on how to do this and it is on substitution

Answer 1

For this equation, substitute y for 1/2x-5, since y=1/2x-5.


4x+2(1/2x-5)= 0

4x+x-10=0

Combine like terms.

5x-10= 0

Add 10 to both sides.

5x=10

Divide by 5.

x=2

Now, plug in x for y.

y=1/2(2)-5
y= 1-5
y=-4

(2,-4) <=== solution

We can check this by plugging it in.

4x+2y= 0

4(2)+2(-4)=0
8+2(-4)=0
8-8=0
0=0

This works.

I hope this helps!
~kaikers