Answer:
y = (x - 1) / 2 (First answer choice)
Step-by-step explanation:
1) Start with f(x) = 2x + 1
2) Replace f(x) with y: y = 2x + 1
3) Interchange x and y: x = 2y + 1
4) Solve this result for y: 2y = x - 1, or y = (x - 1) / 2 (This matches the first
answer choice.)
Answer:
D
Step-by-step explanation:
The number is 125 and the equation is 0.8x = 100
Step-by-step explanation:
80% of x is equal to 100.
Write an equation that shows the relationship of 80%, x, and 100
80% = 0.8
0.8x = 100
x = 100/0.8
x = 125
The number is 125 and the equation is 0.8x = 100
9 inches across the floor Brendan rolls his ball if Sydney rolls a ball 63 inches across the floor.
<h3>What is linear equation?</h3>
It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.
If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.
We have:
Sydney rolls a ball 63 inches across the floor. This is 7 times the distance that Brendan rolls his ball across the floor.
Sydney rolls = 7n
Here n represent the number of inches Brendan rolls his ball.
63 = 7n
n = 63/7 = 9 inches
Thus, 9 inches across the floor Brendan rolls his ball if Sydney rolls a ball 63 inches across the floor.
Learn more about the linear equation here:
brainly.com/question/11897796
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