If y varies directly as x and if x = -6when y = 2 how do you find x when y = -9, -8,-6, -5, -4, -3?

1 Answer
Olivier B.
Jul 1, 2015

y=-9 rarr x=-17y=−9→x=−17
y=-8 rarr x=-16y=−8→x=−16
y=-6 rarr x=-14y=−6→x=−14
y=-5 rarr x=-13y=−5→x=−13
y=-4 rarr x=-12y=−4→x=−12
y=-3 rarr x=-11y=−3→x=−11

Explanation:

If yy varies directly as xx, then when xx is increased or decreased by a number nn, so will be yy.

If y=2y=2 when x=-6x=−6 then:

y=-9=2-11 rarr x=-6-11=-17y=−9=2−11→x=−6−11=−17
y=-8=2-10 rarr x=-6-10=-16y=−8=2−10→x=−6−10=−16
y=-6=2-8 rarr x=-6-8=-14y=−6=2−8→x=−6−8=−14
y=-5=2-7 rarr x=-6-7=-13y=−5=2−7→x=−6−7=−13
y=-4=2-6 rarr x=-6-6=-12y=−4=2−6→x=−6−6=−12
y=-3=2-5 rarr x=-6-5=-11y=−3=2−5→x=−6−5=−11

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