Convert the linear equations to their alternate forms (standard or slope-intercept form) for questions 1-3.
1.2x-3y=7
2.y=4/3x-10
3.5x+y=12
4.y=1/2x-2/3
2006-08-26 17:22:24 · 3 answers · asked by joe j 1 in Education & Reference ➔ Homework Help
y=2/3x - 7/3
4x-3y = 30
y= -5x + 12
x+2y= 1 1/3
2006-08-26 17:30:12 · answer #1 · answered by Maria 3 · 0⤊ 0⤋
y=2/3x - 7/3
4x-3y = 30*
y= -5x + 12
3x+6y= 4 *
*In standard form, A, B, and C must be an integer.
Another thing that is useful to know is point-slope form of a line. The formula for this is y - y1 = m (x - x1) where x1 and y1 are points on a line and m is the slope.
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2006-08-26 17:51:07 · answer #2 · answered by Elerth Morrow ™ 5 · 0⤊ 0⤋
standard form is Ax + By = C and slope form is y = mx + b. by just shifting the numbers and terms around, you can change their form:
1 2x - 3y = 7
-3y = -2x + 7
y = 2/3x - 7/3
2. y = 4/3x - 10
3y = 4x - 30
0 = 4x - 3y - 30
4x - 3y = 30
3. 5x + y = 12
y = -5x + 12
4. y = 1/2x - 2/3
6y = 3x - 4
0 = 3x - 6y - 4
3x - 6y = 4
2006-08-26 17:39:00 · answer #3 · answered by lemons 3 · 0⤊ 0⤋