Use a graphing calculator to sketch the graph of the quadratic equation, and then give the coordinates for the x-
intercepts (if they exist).
y= -x2 + 15x - 56
a. (-7, 0); (-8,0)
c. (-7, 0); (8,0)
b. (7,0); (-8, 0)
d. (7,0); (8,0)

d. (7,0); (8,0)

Step-by-step explanation:

see attached.

we can see that the graph of y = -x² + 15x - 56 intersects the x-axis (i.e y = 0) at (7,0) and (8,0)

step-by-step explanation:

given that there are two triangles j'k'l' and jkl>

the former is got by dilating the second one.

when drawn on a grid, (graph paper) coordinates of vertices of first triangle is

(6,12)j, (9,6)k and (12,9)l

side jk has length = distance between j and k

=

side j'k'=distance between j' and k'

=

ie j'k'l' has sides 1/3 of that of corresponding sides of jkl.

hence scale factor of 1/3 is used to get j'k'l'from jkl

answer: '

the distance between points l and m

step-by-step explanation: