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Harrizon [31]
3 years ago
13

What is really critical for the y - intercept? Please answer

Mathematics
2 answers:
ANEK [815]3 years ago
8 0

Answer:

That it satisfies x = 0

Step-by-step explanation:

The y-intercept is whatever the y-value is when the x-value is zero, therefore if the x-value is anything other than 0, you can't have the y-intercept value.

KengaRu [80]3 years ago
3 0

Answer: 0

Step-by-step explanation:

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A line l2 is perpendicular to the line x + 2y – 5 = 0 without computing the gradient of this
Stells [14]

Answer:

y=2x-2

Step-by-step explanation:

first, let's put the line into y=mx+b form (slope-intercept form), where m is the slope (or gradient) and b is the y intercept

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x+2y=5

subtract x from both sides

2y=-x+5

divide by 2

y=-1/2x+5/2

perpendicular lines have slopes (gradients) that are negative (one is positive, another one is negative) and reciprocal (they are essentially the same number, just "flipped")

to find the slope of I2:

since -1/2 is negative, that means the slope of I2 will be 2 (2/1 is the reciprocal of 1/2 (positive version of -1/2))

so here's our equation so far:

y=2x+b

now we need to find b

because line will pass through (3,4), we can use it to solve for b

substitute 4 as y and 3 as x

4=2(3)+b

multiply

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therefore the equation is y=2x-2

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3 0
3 years ago
after two years on the job, an engineer salary was $60,000. after seven years on the job, her salary was $66,000. let y represen
galina1969 [7]

Answer: y = 1200m + 57,600

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So, we have (2,60000) and (7,66000)

y = mx + b

66000 = 7m + b

60000 = 2m + b (-)

________________________

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60000 = 2.1200 + b

60000 = 2400 + b

b = 60000 - 2400

b = 57600

y = mx + b

y = 1200m + 57,600

8 0
3 years ago
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