Question

Find the solution to the system of equations.

You can use the interactive graph below to find the solution.
\begin{cases} y=-4x-3 \\\\ y=-2x+1 \end{cases}
⎩
⎪
⎪
⎨
⎪
⎪
⎧
​

y=−4x−3
y=−2x+1
​

x=x=x, equals
y=y=y, equals

Answer 1

x = -2, y = 5.

Explanation:

y=−4x−3

y=−2x+1

Because y is common to both left sides:

-4x - 3 = -2x + 1

-4x + 2x = 1 + 3

-2x = 4

x = 4/-2

x = -2.

So y = -4(-2) - 3

= 8 - 3

= 5 .