Posted by **Crystal** on Friday, June 12, 2009 at 5:39pm.

Use substitution to determine whether the ordered pair (–2, –3) is a solution of the equation x^2 – y = 7

I say no, but am still not sure because the signs are confusing. Am I correct? Thanks!

- Math -
**Reiny**, Friday, June 12, 2009 at 5:50pm
let's see if the point satisfies the equation

Left Side

= x^2 - y

= (-2)^2 - (-3)

= 4 + 3

= 7

Right Side = 7

Mmmmhhh?

- Math -
**Crystal**, Friday, June 12, 2009 at 5:51pm
I guess this makes sense but I got -1 for the answer. Did I confuse the signs?

- Math -
**Ms. Sue**, Friday, June 12, 2009 at 6:00pm
Yes. You confused the signs. Perhaps you thought that -2^2 was -4. But when you multiply two negative numbers, the answer must be positive.

## Answer This Question

## Related Questions

- Algebra - Use substitution to determine whether the ordered pair (– 3, – 2) is a...
- Algebra - Use substitution to determine whether the ordered pair (–2, –3) is a ...
- Math - Using substitution, tell whether the ordered pair is a solution to the ...
- math(am i right) - determine whether (-5,1) is a solution of 9x-9y= -3 I said no...
- Math - Hi, I need help on this problem:Solve the system of equation by giving an...
- Math - 1. Is the equation true, false, or open? 4y 8 = 6y + 3 2. Which value is ...
- Math - determine whether the ordered pair is a solution; 6y-3x=-9,(1,-1) and 5y...
- Math - 1. Determine which ordered pair is a solution of y = x^2-2 (5, 21), (–5, ...
- Order Pairs Math - Which ordered pair is a solution of the equation y = x – 3...
- Math - Use the method of substitution to solve the linear equation! 6a=6-b 6a=5-...

More Related Questions