use substitution method

3x-y=0
2x-y=-1

from the first : y = 3x

Into the second :
2x - 3x = -1
-x = -1
x = 1
then y = 3(1) = 3

ghngh

2x+y=5 in slope form

Sure! I will help you solve the system of equations using the substitution method.

Step 1: Solve one of the equations for one variable in terms of the other variable.
Let's solve the first equation, 3x - y = 0, for y:
y = 3x.

Step 2: Substitute the expression for the variable you solved in step 1 into the other equation.
Substitute y = 3x into the second equation, 2x - y = -1:
2x - (3x) = -1.

Step 3: Simplify the equation obtained in step 2 and solve for x.
2x - 3x = -1
-x = -1
x = 1.

Step 4: Substitute the value of x back into one of the original equations and solve for y.
Using the first equation, 3x - y = 0:
3(1) - y = 0
3 - y = 0
y = 3.

Therefore, the solution to the system of equations is x = 1 and y = 3.

By following these steps, you can solve the given system of equations using the substitution method.