Math ~ Check Answers ~

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A system of linear equations is shown below.

5X = 3y - 2
y = X + 4

What is the x -coordinate of the solution?

a.) 2
b.) 4 *****
c.) 5
d.) 1


Jean needs to graph the function below.

y = 7x ^2 + 8x -6

How many times should the graph of this function intersect the x-axis?


a.) 3
b.) 2 ******
c.) 1
d.) 0

  • To Like_A_Boss -

    Like_A_Boss I said check not do my Homework! OK! so mind your own business!!!!

  • Math ~ Check Answers ~ -

    first no I get x = 5
    5X = 3y - 2
    3y = 3X + 12
    ----------------add
    5 x + 3 y = 3 x + 3 y + 10

    2 x = 10
    x = 5

  • Math ~ Check Answers ~ -

    Shut up!

  • Math ~ Check Answers ~ -

    y = 7x ^2 + 8x -6
    we need to make sure solution is real and not repeated

    look at b^2-4ac
    64 + 168
    positive so sqrt of + number,
    you are right, two real zeros

  • Math-----Thanks Damon -

    Thanks Damon for checking my answers!
    :-)

  • Math ~ Check Answers ~ -

    You are welcome :)

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