The two dot plots below compare the forearm lengths of two groups of schoolchildren:
2 answers:
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Consider the complete question is "The equation of the line is y=5x+1 and the equation of line
is 2y-10x+3=0. How can you show that these two lines are parallel?"
Given:
Equation of is
.
Equation of is
.
To show:
The these line as parallel.
Solution:
We have,
...(i)
...(ii)
Equation (ii) can be written as
...(iii)
Slope intercept form of a line is
...(iv)
where, m is slope and b is y-intercept.
On comparing (i) with (iv), we get slope of line .
On comparing (iii) with (iv), we get slope of line .
Since, , therefore, lines
and
and parallel because slope of two parallel lines are always equal.
Hence proved.
Answer:
Question 2: Option B
Step-by-step explanation:
The number of ounces and the total price for yogurt cup A is not stated, therefore, I can not answer question 1 properly.
<h3>For question 2:</h3><h3 />
Unit rate formula for price is:
32 ounces of yogurt sell for 1.62.
So:
0.050625 ≈ 0.05
<em>Option B should be the best answer. </em>