Multi-Step Equations
Systems of Equations
y = 2x - 4
y = x - 1
please help!!! :'(
my answer - 3
is it correct???
i got 3 not -3
when i put my answer I put a dash, that's not a negative sign
What is -3 ?
the x or the y
you have to find both
x
i already found the y which is..... 2
x=-3 , y = 2 does not work in either of your equations
I get x = 3 , y =2
To solve this system of equations, we will use the method of substitution.
Step 1: Start by expressing one equation in terms of one variable. Let's express the second equation, y = x - 1, in terms of x:
y = x - 1
Step 2: Now, substitute this expression for y in the first equation:
y = 2x - 4
x - 1 = 2x - 4
Step 3: Simplify the equation by combining like terms.
x - 2x = -4 + 1
-x = -3
Step 4: Multiply each term by -1 to isolate x:
-x * (-1) = -3 * (-1)
x = 3
Step 5: Now that we have found the value of x, we can substitute it back into one of the original equations to solve for y. Let's use the second equation:
y = x - 1
y = 3 - 1
y = 2
So the solution to the system of equations is x = 3 and y = 2.