What do the following two equations represent? 4x-2y= -5 and y=-1/2x-1/10

For f(x)=2x+3 and g(x)=x^2- 8 find (f+g) (x)

Girardo is using the model below to solve the equation . girardo uses the following steps: step 1 add 4 negative x-tiles to both sides step 2 add 1 negative unit tile to both sides step 3 the solution is which step could be adjusted so that gerardo's final step results in a positive x-value? in step 1, he should have added 4 positive x-tiles to both sides. in step 1, he should have added 3 negative x-tiles to both sides. in step 2, he should have added 4 negative unit tiles to both sides. in step 2, he should have added 1 positive unit tile to both sides.

Using elimination, what is -4x+2y=-12 4x+8y=-24