Answer:
10
Step-by-step explanation:
the most common #is 10
A. 3x + y = 13 → 15x + 5y = 65
x - 5y = 15 → x - 5y = 15
16x = 80
16 16
x = 5
x - 5y = 15
5 - 5y = 15
- 5 - 5
-5y = 10
-5 -5
y = -2
(x, y) = (5, -2)
b. 6x - y = 14
2x + y = 12
8x = 26
8 8
x = 3¹/₄
6x - y = 14
6(3¹/₄) - y = 14
19¹/₂ - y = 14
- 19¹/₂ - 19¹/₂
-y = -5¹/₂
-1 -1
y = 5¹/₂
(x, y) = (3¹/₄, 5¹/₂)
c. 3x - 4y = 22 → 15x - 20y = 110
2x + 5y = 7 → 8x + 20y = 28
23x = 138
23 23
x = 6
3x - 4y = 22
3(6) - 4y = 22
18 - 4y = 22
- 18 - 18
-4y = 4
-4 -4
y = -1
(x, y) = (6, -1)
Reflect over the y-axis and translate down by 2
Answer:
y = -5/6x - 4/3 (slope-intercept form)
Step-by-step explanation:
<u>From my understanding, we have to convert this equation into slope intercept form.</u>
<em>Slope-intercept form: y=mx + c</em>
<em>where m is the slope and x is the y-intercept</em>
5/8x+3/4y=-1
<em>Make y the subject</em>
3/4y = -1 - 5/8x
3y = -4 - 5/2x
y = -4/3 - 5/6x
y = -5/6x - 4/3 (slope-intercept form)
Slope or m = -5/6
y-intercept or c = -4/3
