Directions: Write at least two linear equations so that the solution of the system of equations of that line and 4x + y = 8 is (3, -4)

### Hint

What does it mean to be a solution of a system of equations?

A modification for this problem could be that the solution to a system is (0, -5). Students are to create a system of equations that has (0, -5) as the solution.

Another modification could be using Desmos. Here is a link to the problem I graphed using Desmos.

### Answer

There are many linear equations that meet the constraints. Here are a couple of solutions.

y = x – 7

2x + 3 y = -6

y = x – 7

2x + 3 y = -6

Source: Nanette Johnson

For high school ( or adavnced) push them with the extension, is it possible to show all possibilities? Shows value in point-slope and use of variables.

y + 4 = a(x – 3) where a cannot equal -4.

Just a thought to an already great problem! Used it today. Nice work!

I always like the “outside the box” thinkers in my class:

y= – 4

x = 3

Change the directions to two equations with two variables each…

Larry : Love your extension.

y=x-1

2x+2y=18

(4,5)