anonymous
  • anonymous
Write the slope-intercept equation for the line with slope 1/2 and y-intercept (0, -5)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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mysesshou
  • mysesshou
sorry, was on phone. This one?
anonymous
  • anonymous
yes and no problem
mysesshou
  • mysesshou
Ok, so slope intercept form is Y = m*x + b m is the slope b is the y intercept So for your problem, the slope = m = 1/2 and the y intercept is b = -5 then put into the equation Y = (1/2)*x + (-5) Y=(1/2)*x - 5

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mysesshou
  • mysesshou
works ok?
anonymous
  • anonymous
so does this have an = in it or do i leave it like that
mysesshou
  • mysesshou
Y = (1/2)*x - 5 Yes, this has a = sign
anonymous
  • anonymous
i see that i have to graph the line as well
mysesshou
  • mysesshou
ok. so plot the point (0,-5)
mysesshou
  • mysesshou
Then count up one square and to the right two squares and draw another point. connect the dots.
mysesshou
  • mysesshou
and draw a line extending beyond the dots too. you can keep counting up one, to the right two places
mysesshou
  • mysesshou
|dw:1332362929669:dw|
anonymous
  • anonymous
nice drawing
mysesshou
  • mysesshou
Y = (1/2)*x - 5 if y = 0, solve for x for another point: 0 = (1/2)*x-5 5=(1/2)*x x=10 so you can plot the point (10,0) also
anonymous
  • anonymous
so i can plot both or either or?
mysesshou
  • mysesshou
|dw:1332363144723:dw|
mysesshou
  • mysesshou
you can plot either way. by using (0,-5) and then counting up one over two for the slope, or you can plot (0,-5) and (10,0) and connect with line
anonymous
  • anonymous
okay i got it
mysesshou
  • mysesshou
you could use both methods too, just for verification, like for an exam or something, where it is important.
anonymous
  • anonymous
this is my school final exam lol
mysesshou
  • mysesshou
Note that the counting method for the slope is because 1/2 = y/x = the change in y over the change in x. if the slope was negative the line would be perpendicular to the line drawn, and then it would be down/right.
mysesshou
  • mysesshou
ah, right, my short term memory. :)
mysesshou
  • mysesshou
so if it is final, hopefully this stuff isn't too new to you :) just need a refresher
mysesshou
  • mysesshou
also you should probably complete the line extended to the right to intersect the x axis, but my picture ran out of room
mysesshou
  • mysesshou
plot (0,-5) and (10,0) and connect with line --> is probably most accurate and proper
anonymous
  • anonymous
okay are we ready for the next one if you have time i only got 3 after the one im about to post
mysesshou
  • mysesshou
i can help a little more
anonymous
  • anonymous
thanks

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