Question

Y=-9x+8 y=-10x+9 I don’t know how to solve this

Answer 1

x = 1

Explanation:

From the various available methods of solving systems of linear equations, let's use substitution, because "y =" appears in both equations:

y = -9x + 8 = y = -10x + 9

Then -9x + 8 = -10x + 9

Combining the x terms, we get:

x + 8 = 9

Finally, subtracting 8 from both sides yields

x = 1

Answer 2

You use substitution, so you chose one of the equations to plug in, let’s use y=-9x+8 you plug that in where it says y because that is what y equals. So the new equation is -9x+8=-10x+9. After that you add 10x to both sides and the equation breaks down to x+8=9 and finally x=1