Answer:
solution is -6/5 because:
-1/2(5x-8)=7
-5x+8/2=7
-5x+8=7*2
-5x+8=14
-5x=14-8
-5x=6
x=-6/5
Answer:
f(3)=
Step-by-step explanation:
Answer:
The graph cannot represent a proportional relationship
Step-by-step explanation:
we know that
A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form or
In a proportional relationship the constant of proportionality k is equal to the slope m of the line and <u><em>the line passes through the origin</em></u> (0,0)
That means----> The x-intercept and the y-intercept of the line must to be the origin (0,0)
If the given line passes through the point (0,5), then the line not passes through the origin
therefore
The graph cannot represent a proportional relationship
Answer:
x - y = 25
Step-by-step explanation:
3x - 4y = 15
-2x + 3y = 10
Add the two equations together
3x - 4y = 15
-2x + 3y = 10
----------------------
x - y = 25