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laila [671]
3 years ago
13

Find the x- and y- intercepts of the line. 2X+3y=-18

Mathematics
1 answer:
Anna71 [15]3 years ago
6 0
To find the x-intercept, plug zero into y and solve for x.

2x+3(0)=-18

2x=-18
/2     /2

x=-9
To solve for the y-intercept, do the same thing, but instead plug zero into the x-intercept to solve for y.

2(0)+3y=-18
3y=-18
/3     /3

y=-6

So, your answer to your question is the y-intercept=-6, and the x-intercept=-9
Hope this helps!:)
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1/2r -3= 3 (4-3/2r) solve for r
s2008m [1.1K]

1/2r -3= 3 (4-3/2r) is to be solved for r.


I'll begin by making the assumptions that by 1/2r you actually meant (1/2)r and that by 3/2r you actually meant (3/2)r. When in doubt, please use parentheses to make your meaning clear.


Thus, 1/2r -3= 3 (4-3/2r) becomes (1/2)r -3= 3 (4-(3/2)r ) .

Simplify this by multiplying all 3 terms by 2. Doing this will eliminate the fractions:


r -6 = 3 (4*2-(3)r ) or r - 6 = 24 - 9r


Now expand the right side, using the distributive property of

r - 3 = 24 - 9r


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10r = 30


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The value of r that satisfies this equation is 3

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3 years ago
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