Question

solve the following systems of equations algebraically

55: y=-7x+15
y=-5x+11

Answer 1

Algebraically is a pretty vague adjective, in the context of solving a system of linear of equations.

Answer 2

You have two equations equalling y.

Therefore both RHS of the two equations must be equal.

-7x+15=-5x+11
4=2x
2=x

Not done yet...still need y.

We have x=2, now let's plug this in to either equation (we will get same answer either way)

y = -7x+15
= -7(2)+15
= -14 + 15
y = 1

So x = 2, y = 1

Answer 3

thanks :)