When we want to find the roots of a one-variable function, we look for where its graph intersects the x-axis. In this case, the graph intersects the x-axis at
The vertex of a parabola is the highest or lowest point on it, depending on whether the leading coefficient of the quadratic function is negative or positive. In this case, we see that the lowest point is
For the y-intercept, just look for where the graph intersects the y-axis; in this case, that point is
Using this information, the vertex-form equation of the parabola is so the factors are two copies of In this case, the value of in the equation was conveniently 1; if that's not the case, you'll want to plug in to solve for the value of a that gives the correct y-intercept.
Does that help clear things up?
Let's call the store value as s and the wholesale price as w. A store prices tapes by raising the wholesale price 50%(0.5 in decimals) and adding 25 cents, writing this as an equation, we have
If we invert the equation we're going to find the the wholesale price as a function of the store price.
Now, to find the wholesale price if the sales price is $1.99, we just need to evaluate s = 1.99 on the function we created.
The wholesale price is $1.16.
Answer:
Step-by-step explanation:
Square the 10.
Subtract 10 with 5.
Multiply the numbers in the numerator.
Divide 1000 with 100.
Answer:
The slope = Rise over run
Step-by-step explanation:
I would answer your question farther, but you didn't post a picture of the line.
determine two points and count from the left one to the right one. Rise is y so count how many up or down. Run is x so count how many left or right.