ecletcicbeauty5793
13.07.2019 •
Mathematics
Tom just received a new job offer. he is told that his starting salary will be $75,000 per year. he is told his salary will probably be $81,000 in four years. we'll use this information to try to anticipate his future earnings in any given year.assume that y= tom's salary amount in dollars and x= the number of years worked. step 1.use the data given to find the rate of change, or the salary increase per year.( hint: compute the slope.) we are now going to use a line to model tom's salsry growth. step 2. use the data given and the slope value from step 1 to write the slope-intercept form of the line. step 3. based on your equation from step 2, what will tom's salary be in ten years?
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Ответ:
Part 1) The rate of change is
Part 2) The equation of the line into slope intercept form is
Part 3) Tom's salary would be in ten years
Step-by-step explanation:
Let
x ------> the number of years worked
y -----> Tom's salary amount in dollars
we have the points
A(1, 75,000) and B(4,81,000)
step 1
Find the rate of change (slope)
The slope is equal to
step 2
Find the equation of the line into slope-intercept form
we know that
where
m is the slope
b is the y-intercept
we have that
point A(1, 75,000)
substitute
The equation of the line is
step 3
What will Tom's salary be in ten years?
For x=10 years
Substitute in the linear equation
Ответ:
answer: y - 3 = 4/11(x - 11)
step-by-step explanation:
the equation of a straight line can be represented in the point slope form as
y - y1 = m( x - x1)
where
m = slope = (change in the value of y in the vertical axis) / (change in the value of x in the horizontal axis)
the given slope of the line is 4/11 and the point through which the line passes is (11,3)
we would substitute m = 4/11, x1 = 11 and y1 = 3 into y - y1 = m( x - x1) to get the equation in the point slope form. it becomes
y - 3 = 4/11(x - 11)
for the slope intercept form, the equation is y = mx + c
where c is the intercept. to find c, we will substitute
m = 4/11, x = 11 and y = 3 into y = mx + c. it becomes
3 = 4/11 × 11 + c
3 = 4 + c
c = 3 - 4 = -1
the equation becomes
y = 4x/11 - 1