what is the y intercept of these?

Question

So if the question was
2/3X+Y/3=-1/3 Would that answer be -1/3
3/5Y-X/5=-6/5 Dont know this one
4/5=-1/3X-3/4 Dont know this one

4/5=-1/3X-3/4y sorry

Answer 1

Either set x = 0 and solve for y, or put the equations in slope-intercept form (y = mx + b)... then just read off 'b'.

1) 2/3x + y/3 = -1/3
Subtract 2/3x from both sides:
y/3 = -2/3x -1/3

Multiply by 3:
y = -2x -1

So the y-intercept (b) is 1.

Try the rest on your own...

Answer 2

When X = 0.

Just plug 0 into the equation when you see an X.

2/3 * X + Y / 3 = -1 / 3
2/3 * 0 + Y / 3 = -1 / 3
0 + Y / 3 = -1 / 3
Y = -1

The Y intercept is -1

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3/5 * Y - X / 5 = 6 / 5
3/5 * Y - 0/5 = 6/5
3/5 * Y - 0 = 6/5
3Y = 6
Y = 2

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4/5 = -1/3 * X - 3/4 ??? Where's the Y?? I think you typed this one incorrectly. You can't have a Y intercept without Y.

Answer 3

the y intercept is the point on the graph where x=0
2/3X+Y/3=-1/3 if x were 0,
2/3*0+y/3 = -1/3
y/3=-1/3
y=1, x=0

the last one has a typo. the equation should be in terms of x and y, you only have x

Answer 4

1.y/3+2/3x=-1/3
multiplying by 3
y=-2x-1
y intercept -1

2. multiplying by 5
3y-x=-6
3y=x-6
y=x/3-2
y intercept=-2

3.multiply by 60
48=-20x-45
20x=-93
line parallel to y axis
so no intercept

Answer 5

#1 it would be -1
Y= -2X-1
#2 it would be -2
Y=1/3X-2
and there is no Y in the last one
sry

Answer 6

(i) y-int = -1/3

(ii) y-int = -2

(iii) No y-int because the line is verticle and parallel to the y-axis.

All the BEST !

Answer 7

The first would be the +Y/3

The second would be the -X/5

The last would be the -3/4

Answer 8

1, 2, there is no Y in the third problem you 'tard

Answer 9

this is not a very efficient way to do your homework.