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January 28, 2015

January 28, 2015

Posted by **Anonymous** on Tuesday, December 17, 2013 at 4:53pm.

Write the standard form of the equation of each line given the slipe and y-intercept.

1. Slope= -1/5, y-intercept=0

Write the slope intercept form of the equation of each line.

2. Y-3=-2(x+4)

Write the slope intercept form of the equation of the line thorough the given points.

3. Through: (1,-4) and (-5,-4)

- Quick math help -
**Reiny**, Tuesday, December 17, 2013 at 6:04pmWow, I must say, if you cannot do those questions, then you are certainly not ready for your math exam

1. if the y-intercept is 0, doesn't that mean the line goes through the origin or (0,0) ????

so in y = mx + b form ...

y = (-1/5)x

multiply by 5

5y = -x

standard form has both x and y terms on the left, constants on the right, so

x + 5y = 0

2. given:

y - 3 = -2x - 8

take the -3 to the other side ...

y = -2x - 5

3. slope = (-4 - (-4))/-5-1) = 0/-6 = 0

so you have a horizontal line !

look at the y values of your two points, both -4

As a matter of fact, your equation would simply be

y = -4

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