A direct variation equation is one that requires y varies directly as x and looks like this in equation form:
where k is the constant of variation. If we solve this for y, we have y = kx, which happens to be a linear function... a line. k here, then, serves as the slope. So what we are given as points on a direct variation function are actually points on a line. The equation for this requires that we find the slope and then rewrite the formula accordingly. First the slope:
Now we need to write the equation by using one of the points' coordinates. I picked the first point that has an x coordinate of -9 and a y coordinate of -3. Fitting those into the slope-intercept form of a line,
which simplifies to
-3 = -3 + b and b = 0. That means that the equation of direct variation is
or just
Could you please explain how to work this app
Answer:
- decrease: $1881
- ending value: $4719
Step-by-step explanation:
The decrease is found by multiplying the original amount by the percentage decrease:
$6600 × 28.5% = $6600 × 0.285 = $1881
Jose's account decreased by $1881.
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The remaining value is the original amount, less the amount of decrease.
$6600 -1881 = $4719
At the end of last year, Jose had $4719 in his investment account.
Answer:
Ask with your teacher.not to me
Answer:
1
Step-by-step explanation:
Anything divided by itself is always 1.