anonymous
  • anonymous
Select the equation in which the graph of the line has a negative slope, and the y-intercept equals -5. 10x + 5y = –25 5x – 10y = –12 20x + 5y = 50 2x + 6y = 10 Select the equation that contains the point (3, -9), and in which the graph of the line has a positive slope. y – 9 = –4(x + 3) y + 9 = 4(x – 3) y – 9 = 4(x + 3) y + 9 = –4(x - 3) http://prntscr.com/8k86m8
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
@DanJS
DanJS
  • DanJS
you can put each answer into the y = m*x + b form and check
Rushwr
  • Rushwr
for the 1st one is it the 1st answer ? @DanJS

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More answers

DanJS
  • DanJS
or graph by plotting the x and y intercepts and check which has a negative slope, and y=-5 when x=0
DanJS
  • DanJS
solve it for y 10x + 5y = -25 5y = -10x -25 y = -2x - 5
DanJS
  • DanJS
y=mx+b form, m is the slope and b is the y intercept value
anonymous
  • anonymous
so the first answrr would be B?
anonymous
  • anonymous
my mistake A?
DanJS
  • DanJS
yes
Rushwr
  • Rushwr
cool
DanJS
  • DanJS
the second recall thee slope - point form , you can read a point on the line directly from the equation...
DanJS
  • DanJS
y - y1 = m*(x - x1) the point (x1, y1) is on the line, and the slope is m
DanJS
  • DanJS
they want positive m value, so +4 , and (x1 , y1) = (3, -9)
anonymous
  • anonymous
so would the answer be C?
DanJS
  • DanJS
y - (-9) = m*(x - 3)
DanJS
  • DanJS
watch the signs
anonymous
  • anonymous
True, so it would be B
Rushwr
  • Rushwr
yeah noh !!!!
Rushwr
  • Rushwr
what do u think about the last question ?
anonymous
  • anonymous
i was thinking A
Rushwr
  • Rushwr
yeah that's correct
anonymous
  • anonymous
k thanks
Rushwr
  • Rushwr
no problem :)
DanJS
  • DanJS
same as the first question, inspect after solving for y=mx+b form

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