Answer:
the domains are x axis or intercepts and range is y axis or intercepts
6x + x = 49
7x=49
x=7
Substitution:
6x=6X7=42
Ivan has 42 blue beads.
And, he has 6 red beads.
The formula for slope is 
In this case:

so...


-1 <<<The slope
Hope this helped!
~Just a girl in love with Shawn Mendes
56.7 because it is on the hundredths place.