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slope=2, y-intercept=-9

0 votes
Equations of lines graph and label the line in standard form.
asked Mar 17, 2014 in ALGEBRA 1 by skylar Apprentice

1 Answer

+2 votes
 
Best answer

slope (m)= 2 and y-intercept (b) = - 9.

Slope-intercept form of a line y = mx + b.

Substitute (m)= 2 and (b) = - 9 in y = mx + b.

The line equation is y = 2x - 9.

slope = 2 and y-intercept is- 9.

y-intercept is - 9, so the line crosses the y-axis at (0, - 9)

Using slope find the next point.

Slope = rise/run = 2/1

Start at point (0, - 9), move 2 units up and 1 unit right, then plot the point (1, -7).

Draw a line through these points.

Graph :

graph for the equation - x - 2y = 8

The standard form of the line equation is ax + by + c = 0.

y = 2x - 9

Subtract y from each side.

2x - y - 9 = 0.

The standard form of the line equation is 2x - y - 9 = 0.

answered Mar 17, 2014 by dozey Mentor
selected May 13, 2014 by skylar

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