Question

Substitute 4 and then -4 for x in the equations y=x+1 and 2y-2+=2x. Describe the results

Answer 1

Basically both equations can get you the same answer

Explanation:

for the first

y=x+1

y=4+1

y=5

y=-4+1

y=-3

for the second

2y-2=2(4)

2y-2=8

2y=8+2

2y=10

y=5

2y-2=2(-4)

2y-2=-8

2y=-8+2

2y=-6

y=-3