Answer:
input x = - 7
Step-by-step explanation:
A is modelled as y = 5x - 4
B is modelled as y = 3x + 8
We require output of A three times the output of B , then
5x - 4 = 3(3x + 8) ← distribute
5x - 4 = 9x + 24 ( subtract 9x from both sides )
- 4x - 4 = 24 ( add 4 to both sides )
- 4x = 28 ( divide both sides by - 4 )
x = - 7 ← input
4x + 5y = 9
5y = -4x + 9
y = -4/5x + 9/5......slope intercept form (y = mx + b)
In y = mx + b form, which is what this equation is in now, the slope is in the m position and the y int is in the b position
y = mx + b
y = -4/5x + 9/5
so ur slope(m) = -4/5 and ur y int (b) = 9/5
NO because 3/5 is the same as 0.6
Collect like terms
1/2((10x - 8x) - 6y)
Simplify (10x - 8x) - 6y to 2x - 6y
1/2(2x - 6y)
Simplify 2x - 6y/2
2x - 6y/2
Factor out the common term 2
2(x - 3y)/2
Cancel 2
<u>Answer: D. x - 3y</u>
GCF for 15 : 1,3,5,15
GCF for 6: 1,2,3,6
GCF for 15 and 6 is: 3
