A) We can pick any two values from the table then can subtract initial value from final value divide by the number of instance which will give us the rate of change.
b) Same with the graph, we take two coordinates and then apply in the formula:
slope (m) = y2-y1 / x2-x1
c) We can write the equation, by substituting into the formula:
y - y1 = m (x - x1)
Where y-interecpt & slope is most important
d) When, we completely solve the equation, then it gives y-intercept, and first value of the path in the graph is known as initial value
e) In linear interval, difference between any two instances must be same, 'cause they follow the rule of proportionality whereas in non-interval, differnce will be different in magnitude
Hope this helps!
I only know #19
Boots=x
Shoes=x-15
3(x-15)+2x=120
3x-45+2=120
5x-45+2x=120
5x=165
X=33
Boots=$33
Solution:
1) Solve for x in 3x+7y=-1
x=\frac{-1-7y}{3}
2) Substitute x=\frac{-1-7y}{3} into 4x-3y=11
\frac{4(-1-7y)}{3}-3y=11
3) Solve for y in \frac{4(-1-7y)}{3}-3y=11
y=-1
4) Substitute y=-1 into x=\frac{-1-7y}{3}
x=2
5) Therefore,
x=2
y=-1
Done!
Answer:
3 is the answer.
Step-by step explanation:
1/4 x 12
=> 1 x 3
=> 3
Therefore, 3 is the answer.
Hoped this helped.
Answer: The equation in slope intercept form is
y = 2x/5 + 4/5
Step-by-step explanation:
The equation of a straight line can be represented in the slope-intercept form, y = mx + c
Where c = y intercept
m represents the slope of the line.
The given equation is expressed as
2x - 5y + 4 = 0
Adding 5y to the left hand side and the right hand side of the equation, it becomes,
2x - 5y + 5y + 4 = 5y
5y = 2x + 4
Dividing the left hand side and the right hand side of the equation by 5, it becomes,
5y/5 = 2x/5 + 4/5
y = 2x/5 + 4/5
