Question

Solve the system by substitution. y = 4x + 22 y = -7x

Answer 1

Answer:

x=-2

y=14

Step-by-step explanation:

-7x=4x+22

-11x=22

x=-2

y=-7(-2)

y=14

Answer 2

Answer:

$y=14$ ,  $x=-2$

Step-by-step explanation:

If two items or expressions are equal to the same subject then they are equal to each other,

y = 4x + 22 and y = -7x

Using the statement at the top

$4x + 22 = -7x$

Subtract -7x from both sides to collect the x terms

$11x+22=0$

Minus 22 from both sides to isolate 11x

$11x=-22$

Divide both sides by 11 to isolate x

$x = -2$

Now that we have the value of x we can substitute it into any of the equations to find the value of y

Substitute x = -2 into y = -7x

$y = 14$

So the solution is  $y=14$  and  $x=-2$

Hope this helps :)