Which is the best first step when solving the following system of equations? x+y=3
4x-y=7
O Multiply the first equation by 4.
Add the first equation to the second equation.
O Multiply the second equation by -1.
O Subtract the second equation from the first equ

How do i do this activity, is appreciated

Піf x = y and y= z, which statement must be true? оа. -x = -2 b. x= z ос. —x = 2 od. 2= x

Sample response: if the graph passes the horizontaline test, then the function is one to one. functions that are one to one have inverses that a therefore, the inverse is a hinction compare your response to the sample response above. what did you include in your explanation? a reference to the horizontal-line test d a statement that the function is one-to-one the conclusion that the inverse is a function done