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arlik [135]
3 years ago
15

Write the equation of the line that has a y-value that increases by 4 for every x that increases by 1. It also crosses the y-axi

s at –2.
A. y=4x-2
B. y=1/4x-2
C. y=2x+1/4
D. y=2x-4
Mathematics
1 answer:
34kurt3 years ago
6 0
Slope = rise/run.      the rise is the increase of y and the run is the increase of x. that would make it 4/1 or just 4. now that you have the slope, plug everything into slope-intercept form. y = mx + b. m = the slope. b = the y-intercept. once every thing is plugged in, then the equation would be y = 4x - 2.
i hope i helped
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Answer:

4 hours

Step-by-step explanation:

Since we know he travels at a rate of 1:7.5 all we have to do is divide 7.5 by 30. Do you use proportions? You can set this up as a proportion and the find answer easily.

1\frac{1}{7.5} =\frac{x}{30}

Now we cross product.

7.5 multipled by x  =7.5x

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so now we have

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What is the expression
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Please help I need to find the answer for the graph
goldenfox [79]

Answer:

{ \rm{y = { \boxed{  \blue{- 4}}x + { \boxed{ \blue{5}}}}}}

Step-by-step explanation:

Consinder points (0, 5) and (1, 1):

{ \rm{slope =  \frac{(1 - 5)}{(1 - 0)} =  \frac{ - 4}{1}  }} \\  \\ { \underline{ \rm{ \: m =  {}^{ - }4 \:  }}}

• From general equation of a line:

{ \tt{y = mx + c}}

  • m is the slope
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• Considering point (1, 1)

{ \rm{1 = ( {}^{ - }4 \times 1) + c }} \\ \\  { \rm{1 =   {}^{ - }  4 + c}} \\  \\ { \rm{c = 5}}

• Therefore;

{ \boxed{ \rm{ \: y =  {}^{ - }4x + 5 }}}

7 0
2 years ago
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