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SamuelAlden917

  • 3 years ago

What is the range of y = 5x -2 if the domain is {-3, -1, 0, 1, 3}? Answer {-13, -3, 2, 3, 13} {12, 3, 0, 3, 13} {-17, -7, -2, 3, 13}

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  1. knick032
    • 3 years ago
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    Plug all the values of the domain in for x. The answers you get will be the range.

  2. SamuelAlden917
    • 3 years ago
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    Im sorry. What is the answer?

  3. knick032
    • 3 years ago
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    I explicitly told you how to find the answer. It doesn't get any easier than that.

  4. SamuelAlden917
    • 3 years ago
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    Its B?

  5. SamuelAlden917
    • 3 years ago
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    ?

  6. SamuelAlden917
    • 3 years ago
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    or is it A?

  7. knick032
    • 3 years ago
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    When you plug -3 into the equation for x, what number do you get for y?

  8. SamuelAlden917
    • 3 years ago
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    I have no idea.

  9. knick032
    • 3 years ago
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    What is 5 times -3?

  10. SamuelAlden917
    • 3 years ago
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    -30

  11. knick032
    • 3 years ago
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    Incorrect. Let's just do 5 times 3. One of your hands has 5 fingers, right? How many fingers would you have if you had 3 hands?

  12. SamuelAlden917
    • 3 years ago
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    15?

  13. knick032
    • 3 years ago
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    Yes. But since we're multiplying 5 times negative 3, we put a negative sign in front of the answer. So 5 times -3 = -15. In the original equation, it says y = 5x - 2. So now you need to solve: -15 minus 2.

  14. SamuelAlden917
    • 3 years ago
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    -13!

  15. knick032
    • 3 years ago
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    Actually, since we're subtracting from a negative number, the answer will be "more negative." Another way to think of it is -(15+2). So you would solve for 15+2, and then put a negative sign in front of it. What do you get?

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