I think the answer is -7.8
Answer:
the line rises from left to right
Step-by-step explanation:
the slope is a positive number, therefore it will be rising, not dropping/falling, or going down.
Answer:
y = 3x - 1
Step-by-step explanation:
Rise over run, so 3 over 1 = 3. The y-intercept is -1, so b = -1.
Answer:
Victor originally had $80
Step-by-step explanation:
Let Victor have $4x
Let Susie have $7x
Since Victor spent half his money, he now has $2x
Susie spent $60 and thus now has $(7x - 60)
The final ratio of Victor's money to Susie's money is therefore 2x : $(7x - 60). This is given 1:2. Now we just need to solve the proportion by cross-multiplying
2x : (7x - 60) = 1:2
1 × (7x - 60) = 2 × 2x
7x - 60 = 4x
3x = 60
x = 20
Therefore Victor originally had $4x = $80.
