Khandi
Find the x and y intercepts
1.) 4y-8=2x
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hartnn
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To get x-intercept put y=0 in the equation
to get y-intercept put x=0 in the equation
Khandi
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can you help me do it and explain each step
hartnn
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4y-8=2x
FOR x-INTERCEPT, PUT y=0 in that,
what u get ?
Khandi
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|dw:1352781110121:dw|
that is what i got
tkhunny
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1.) 4y-8=2x
Add 8
4y = 8 + 2x
Subtract 2x
4y - 2x = 8
Divide by 8 \[\frac{y}{2} + \frac{x}{-4} = 1\] This is called the "Intercept Form". The answers are staring at you.
hartnn
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-8=2x
so x= -8/2 = ?
tkhunny
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You have it. Now the other?
Khandi
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-4
Khandi
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hartnn
hartnn
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that is correct.
tkhunny
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Okay, now start with x = 0 and find the y-intercept.
hartnn
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4y-8=0
4y=8
y=?
Khandi
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2
tkhunny
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Now go take a look at that Intercept Form and see if anything looks interesting - particularly the denominators.
hartnn
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thats correct.
any more doubts ?