Which best describes the graph of a quadratic function witha discriminant of -7?
1 answer:
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Answer:
Step-by-step explanation:
x+y≥-4
consider x+y=-4
when x=0,y=-4
point is (0,-4)
when y=0,x=-4
point is (-4,0)
draw a line through (0,-4) and (-4,0)
put x=0,y=0
0+0≥-4
which is true.
Hence origin lies on the graph.
graph is on and right of the line.
<u>Given:</u>
A triangular piece is cut out of a rectangular piece of paper to make the class banner.
<u>To find:</u>
The area of the class banner.
<u>Solution:</u>
The rectangular piece of paper is 14 inches long and inches wide.
From the given diagram, the triangle has a base length of the same 8 inches and has a height of inches long.
To determine the area of the banner, we subtract the area of the triangle from the area of the rectangle.
The area of a triangle
The area of the triangle square inches.
The area of a rectangle
The area of the rectangle square inches.
The area of the class banner square inches.
So the banner has an area of 100 square inches which is the first option.