Find the area of the shaded region.y = 2x + 1
A. 10
B. 12.5
C. 5
D. 7.5
Answer: A
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Use the vertical line test to determine if the graph is a function.
A. Yes B. No
Provide an appropriate response.Consider the linear equations y = 
x + 1 and y = - 
x + 3. How can you tell by inspection that these are perpendicular lines? Write each in standard form. Write a statement explaining how to determine by inspection if two lines (with equations written in standard form) are perpendicular.
What will be an ideal response?
Find the exact value of the square root without a calculator.-
A. 0.00050625 B. -0.01125 C. -0.15 D. 0.15
Find the focus and directrix of the parabola with the given equation.x2 = -16y
A. focus: (0, -4) directrix: y = -4 B. focus: (0, 4) directrix: y = -4 C. focus: (0, -4) directrix: y = 4 D. focus: (-8, 0) directrix: x = 4