Anonymous
Anonymous asked in Science & MathematicsChemistry · 6 years ago

Line m has slope -4 and contains the point (-6, -3). Which of the following is a point-slope equation of line?

A.y - 3 = -4(x + 6)

B.y - 3 = -4(x - 6)

C.y + 3 = -4(x - 6)

D.y + 3 = -4(x + 6)

1 Answer

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  • A.S.
    Lv 7
    6 years ago
    Favorite Answer

    put (-6,-3) i.e. x = -6 and y = -3 in all the four equations and see in which case LHS = RHS

    in A ; LHS = -3 -3 = -6

    RHS = -4(-6 + 6) = 0

    so LHS not equal to RHS ...hence no

    in B ....LHS = -3 - 3 = -6

    RHS = -4(-6 -6) = -48

    so LHS not equal to RHS

    in C....LHS = -3 + 3 = 0

    and RHS = -4(-6-6) = -48

    so LHS not equal to RHS

    in D .....LHS = -3 + -3 = 0

    and RHS = -4(-6 + 6) = 0

    so in this case LHS = RHS and this is your equation

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