One step equations explanation.
2 answers:
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Answer:
Total number of points in the test = 100
Total number of items in the test = 40
Let number of items of 2 points be x and number of items of 3 points be y.
Now, using the given information the situation can be represented by using the following equations :
⇒ x + y = 40 .........(1)
⇒ 2x + 3y = 100 .........(2)
The matrix equation is :
By solving the equation (1) and equation (2), we get :
Solution : x = 20 and y = 20
Hi there! :)
Given equation:
y = 2x + 3
A perpendicular line would have a slope of the negative reciprocal, therefore:
2x --> -1/2x
Use the equation y = mx + b to plug in the given point values along with the slope to solve for the final equation:
3 = -1/2(2) + b
3 = -1 + b
3 + 1 = b
b = 4
Therefore, the final equation is:
y = -1/2x + 4
The correct answer choice is C, y = -1/2x + 4.