5. 2x + 3y = -18
x-intercept is 18; y-intercept is 18.
x-intercept is –6; y-intercept is –9.
x-intercept is 2; y-intercept is 3.
x-intercept is –9; y-intercept is –6.
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2008-12-29 4:17 am
回答 (10)
2008-12-29 4:29 am
✔ 最佳答案
To find the x-intercept, sub in y=02x + 3y = -18
2x + 3(0) = -18
2x = -18
x =-9
To find the y-intercept, sub in x=0
2x + 3y = -18
2(0) + 3y = -18
3y = -18
y = -6
Therefore:
x-intercept is –9; y-intercept is –6.
2008-12-29 4:28 am
x-intercept is –9; y-intercept is –6.
2008-12-29 4:31 am
x-intercept: set y = 0
2x = - 18
x = - 9
y-intercept: set x = 0
3y = - 18
y = - 6
2x = - 18
x = - 9
y-intercept: set x = 0
3y = - 18
y = - 6
2008-12-29 7:34 am
Y-intercept:
2x + 3y = -18
Let x = 0.
2x + 3y = -18
2(0) + 3y = -18
3y = -18
y = -18/3
y = -6
= = = = = = = =
X-intercept:
2x + 3y = -18
Let y = 0.
2x + 3y = -18
2x + 3(0) = -18
2x = -18
x = -18/2
x = -9
â´ the answer is the fourth option.
2x + 3y = -18
Let x = 0.
2x + 3y = -18
2(0) + 3y = -18
3y = -18
y = -18/3
y = -6
= = = = = = = =
X-intercept:
2x + 3y = -18
Let y = 0.
2x + 3y = -18
2x + 3(0) = -18
2x = -18
x = -18/2
x = -9
â´ the answer is the fourth option.
2008-12-29 5:05 am
to get x -intercept and y intercept, we substitute y=0 to
2x+3y=-18
2x+3(0)=-18
2x=-18
x=-9
x=0
2(0)+3y=-18
3y=-18
y=-6
answer is x-intercept is -9 y-intercept is -6 @(^_^)@
2x+3y=-18
2x+3(0)=-18
2x=-18
x=-9
x=0
2(0)+3y=-18
3y=-18
y=-6
answer is x-intercept is -9 y-intercept is -6 @(^_^)@
2008-12-29 4:50 am
2x + 3y = -18 ........................................................[1]
x-intercept means, when y = 0, substitute this in eqn[1]
2x = -18, therefore x-intercepts is: x = -9
For y-intercepts x = 0, we get 3y = -18 OR y = -6 Answer
x-intercept means, when y = 0, substitute this in eqn[1]
2x = -18, therefore x-intercepts is: x = -9
For y-intercepts x = 0, we get 3y = -18 OR y = -6 Answer
參考: Any math book
2008-12-29 4:45 am
Put the eqn into the form y = mx + b:
3y = -2x - 18
y = (-2/3)x - 6
y-int is the value of y when x = 0, therefore y-int is -6
x-int is the value of x when y = 0, therefore:
2x = -3y - 18
x = (-3/2y) - 9
y-int is -9.
3y = -2x - 18
y = (-2/3)x - 6
y-int is the value of y when x = 0, therefore y-int is -6
x-int is the value of x when y = 0, therefore:
2x = -3y - 18
x = (-3/2y) - 9
y-int is -9.
2008-12-29 4:31 am
set y=mx+b and b is the y intercept. which is -6
now the only answer with a y intercept of -6 is the last one. so by process of elimination, x intercept is -9
now the only answer with a y intercept of -6 is the last one. so by process of elimination, x intercept is -9
2008-12-29 4:29 am
x-intercept is -9
y-intercept is -6
y-intercept is -6
2008-12-29 4:29 am
x-intercept is –9; y-intercept is –6.
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