Solve the following equation: 4x - 2 = 7x + 8
Write the equation of the line that passes through points (2,8) and (3,10) in point-slope form.
Solve the following equation 8 - (x - 2) = 3x + 4
2007-03-25 07:22:44 · 3 answers · asked by Landy J 1 in Education & Reference ➔ Homework Help
1) 4x - 2 = 7x +8
-2 = 7x -4x + 8
- 2 = 3x + 8
-2 - 8 = 3x
-10 = 3x
-10/3 = x
-1.33 = x
2) m = (10 - 8) / (3 - 2) = 2 / 1 = 2
y - y1 = m( x - x1)
y - 8 = 2 ( x - 2 )
y - 8 = 2x - 4
y = 2x -4 + 8
y= 2x + 4
So point-slope form would be the y - 8 = 2 ( x - 2)
Slope-intercept form would be the y= 2x + 4
3) 8 - (x-2) = 3x + 4
8 - x + 2 = 3x + 4
10 - x = 3x +4
10 = 3x + x + 4
10 = 4x + 4
10 -4 = 4x
6 = 4x
6/4 = x
1 1/2 = x
2007-03-25 08:26:26 · answer #1 · answered by Mel 2 · 1⤊ 0⤋
first one i think
4x - 2x=7x + 8
7x-4x-2=8
3x-2=8
3x=8-2
3x=4
x =4/3
so x=1.33
2007-03-25 15:09:19 · answer #2 · answered by ujala 1 · 0⤊ 0⤋
well i think that the first one is -3.3333333333 the other ones i dont know the answer
2007-03-25 14:28:40 · answer #3 · answered by DaYrØn™ 2 · 0⤊ 0⤋