Answer:
1) When x is 1, y is 4, and vice versa
2) When x is -6, y is 42, and when x is 7, y is 114
3) When x is -2, y is 2, and when x is 8, y is 42
Step-by-step explanation:
1)
which can be rearranged as 
.
Substituting this lone y into the first equation, you get:
Move everything to one side:
Factor:
2)
which can be rearranged as 
.
Let's use elimination this time and subtract the first equation from the second:
Factor:
3)
Let's set the two equations equal to each other through substitution:
Move everything to one side:
Factor:
Hope this helps!
Answer:
Participant A
Step-by-step explanation:
Rate: jumping jacks per minute
Rate of A: 120jjs / 10mins = 12 jumping jacks per minute
Rate of B: 140jjs / 14mins = 10 jumping jacks per minute
Answer:
B. It describes the distance between 6 and -6 on the number line. (wrong)
Step-by-step explanation:
Answer:
The solution is (-10,-7)
Step-by-step explanation:
y=2/5x-3 and x=-10
We know x = -10
Substitute the second equation into the first equation to find y
y = 2/5 (-10) -3
y = -4 -3
y = -7
The solution is (-10,-7)
