Solve Linear Systems

How many solutions does this equation have?  3x -20 = 3x + 2

How many solutions does this equation have?  3x + 2 = 4x + 6

How many solutions does this equation have?  1/2x + 2 = 3x + 2

Enter the x coordinate of the solution to this system of equations.

HINT: Make sure both equations are in (y=mx+b) form. Then do the shortcut with DESMOS

What is the x coordinate of the solution to this system of equations? HINT: Graph and use nSolve. Menu 64.

Enter the x coordinate of the solution to this system of equations.

HINT: Make sure both equations are in (x + y = #) form. Then do the shortcut.

HINT: MAKE A TABLE FOR BOTH GYMS KEEPING TRACK OF THE TOTAL AMOUNT SPENT. THEN COUNT HOW MANY MONTHS IT TAKES BEFORE THEY BOTH SPEND THE SAME TOTAL.

A system of linear equations is represented by line $$h$$ and line $$g$$ . A table representing some points on line $$h$$ and the graph of line $$g$$ are shown. Which system of equations is best represented by lines $$h$$ and $$g$$ ? Line $$h$$ : ​ (a)   Line $$g$$ :​ ​ (b)  

What is the solution to the following system of equations?