Question

How to solve y=-2x and y=-6 - 4 using substituion

Answer 1

The answer will be (5, -10)

Explanation:

First of all, simplify any expressions that can be simplified

y = - 6 - 4 can be further simplified to y = - 10

We are also given that y = - 2x

We know the value of y, substitute the value of y to find x

- 10 = - 2x

x = 5

(5, -10)

Answer 2

Given the problem: how to solve y=-2x and y=-6 - 4 using substituion

So when there's substation, you'll take the number which the variable, in most cases, x or y, is equal to, and substitute/replace in the equation. So let's solve this one.

y = -6 - 4

y = -2x

So we are given that y is equal to -2x. We will substitute/replace y with -2x in the equation.

-2x = -6 - 4

Calculate

-2x = -10

Divide -2 to both sides

x = 5

There's the x value. Now the y value is -2x. We already know x is 5, so we will substitute x for 5.

y = -2x

y = -2(5)

y = -10

The final answer should be (5,-10).

Hope this helped!