Answer:
1/4
Step-by-step explanation:
To find the slope given two points
m = (y2-y1) / (x2-x1)
= (4-3)/(5-1)
= 1/4
Answer:
2
Step-by-step explanation:
The ratio of Spanish students (S) to French students (F) is ...
S : F = 1.5 : 1
Multiplying that ratio by 2 gives ...
S : F = 3 : 2
This tells us there are 2 students taking French for every 3 taking Spanish.
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<em>Comment on the problem statement</em>
Dragging students is a bad idea.
Below are suppose the be the questions:
a. factor the equation
<span>b. graph the parabola </span>
<span>c. identify the vertex minimum or maximum of the parabola </span>
<span>d. solve the equation using the quadratic formula
</span>
below are the answers:
Vertex form is most helpful for all of these tasks.
<span>Let </span>
<span>.. f(x) = a(x -h) +k ... the function written in vertex form. </span>
<span>a) Factor: </span>
<span>.. (x -h +√(-k/a)) * (x -h -√(-k/a)) </span>
<span>b) Graph: </span>
<span>.. It is a graph of y=x^2 with the vertex translated to (h, k) and vertically stretched by a factor of "a". </span>
<span>c) Vertex and Extreme: </span>
<span>.. The vertex is (h, k). It is a maximum if "a" is negative; a minimum otherwise. </span>
<span>d) Solutions: </span>
<span>.. The quadratic formula is based on the notion of completing the square. In vertex form, the square is already completed, so the roots are </span>
<span>.. x = h ± √(-k/a)</span>