Answer:
Yes, y is a function of x.
Step-by-step explanation:
For a proportional relation, the equation is given by:
where k is the unit rate of change.
We were told that, Lin's sister earns $9.6 per hour.
This means k=9.6.
We substitute to get:
We could rewrite this as
Yes, y is a function of x.
To obtain an equation describing x as a function of y, we solve for x to get:
Answer:
B
Step-by-step explanation:
Answer:
4x -5
Step-by-step explanation:
3+2 (2x - 4)
Distribute
3 + 2*2x - 2*4
3+4x - 8
Combine like terms
4x +3-8
4x -5
Answer:
y - 7 = 3(x + 3) and y = 3x + 16
Step-by-step explanation:
Find the slope first:
As we go from (–3, 7) to (1, –5), x increases by 4 and y increases by 12. Hence, the slope is m = rise / run = 12 / 4, or m = 3.
Next, modify the point-slope form y - k = m(x - h) by inserting the given info:
y - 7 = 3(x -[-3]), or
y - 7 = 3(x + 3)
Note: (h, k) represents the given point, which I have chosen to be (-3, 7).
Next, convert this result to slope-intercept form. Begin by solving this equation for y: y = 7 = 3x + 9, or:
y = 3x + 16
