Question

Does (2, -1) make the equation y = ×2 + x-7 true?

Answer 1

Answer: Yes

Explanation:

Plug 2 into the equation as x: y=(2)²+(2)-7

Simplify: y=4+2-7

y=-1

This means that when x=2, y=-1, so yes (2,-1) makes the equation true.

Answer 2

yes

Explanation:

thay x, y vào phương trình ta có : -1 = 2.2+2-7

<=> -1 = -1 ✔