Tuesday
March 28, 2017

Post a New Question

Posted by on .

Given that y=x^2+2x-3
When x is -3 what is y?
Is the ans 0?

When x is 1 what is y?
Is the ans 0?

  • Maths - ,

    if x=-3, then y=-3, not zero:
    y=-3^2-6-3
    y=6-6-3
    y=-3
    Does this make sense?

    if x=1, then y=0, you are correct:
    y=1^2+2-3
    y=1+2-3
    y=3-3
    y=0
    Does this make sense?

    Hope this helps!! :-)

  • Maths - ,

    Sally has made a mistake. (-3)^2 = 9 not 6.

    y=-3^2-6-3 = 9 - 6 - 3 = 0

    The second value solution is correct.

    I hope this helps a little more. Thanks for asking.

Answer This Question

First Name:
School Subject:
Answer:

Related Questions

More Related Questions

Post a New Question