Answer:
Graph B represents a function.
Step-by-step explanation:
Graph B is a quadratic function. y = x^2
<u>Answer:</u>
x=3
<u>Step-by-step explanation:</u>
3(3 + x)=15+x
<u>distribute</u>
9 + 3x= 15+x
<u>subtract x from each side</u>
9+3x-x = 15
9+2x = 15
<u>subtract 9 from each side</u>
9+2x-9 = 15-9
2x = 6
<u>divide by 2</u>
2x/2 = 6/2
x=3
The first one (top left) is a function. Use the vertical line test, if a vertical line crosses the line drawn on the graph twice, then it's not a function.
In both cases the first step is the same. They start placing a compass on point P (which is on or off the line) and swinging an arc of any size that crosses the line twice. This creates a segment on the line that can be bisected.
Then, the steps differs for each case. In the case that the point P is on the line, a larger arc than the previous drawn is needed to be drawn from the extremes of the segment made before. In the other case, the same arc as the previous drawn is used.
The final step is also the same. This consist in connecting the intersection of the two small arcs made to point P.
To find the answer you plug 3 in
(1/9)(9^3)
(1/9)(729)
81
